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RSS Journal of Applied Mechanics Newest Issue

  • Irregular Hexagonal Cellular Substrate for Stretchable Electronics دی ۲۱, ۱۳۹۷
    The existing regular hexagonal cellular substrate for stretchable electronics minimizes the disruptions to the natural diffusive or convective flow of bio-fluids. Its anisotropy is insignificant, which is not ideal for mounting on skins that involve directional stretching. This paper proposes an irregular hexagonal cellular substrate with large anisotropy to minimize the constraints on the natural […]
  • Mechanics Design for Compatible Deformation of Fractal Serpentine Interconnects in High-Density Stretchable Electronics دی ۲۱, ۱۳۹۷
    Inorganic stretchable electronics based on the island-bridge layout have attracted great attention in recent years due to their excellent electrical performance under the extreme condition of large deformations. During the mechanics design of interconnects in such devices, the major task is not only to maximize the elastic stretchability of device but also to smoothen the […]
  • An Improved Design of the Substrate of Stretchable Gallium Arsenide Photovoltaics دی ۱۸, ۱۳۹۷
    A new design has been proposed and numerically analyzed for the polydimethylsiloxane (PDMS) substrate of gallium arsenide (GaAs) photovoltaics. A stack structure is realized by inserting a cube between island and basement, and thus, a support structure of basement-cube-island is formed. Numerical analyses show that, as the deformation of GaAs layer and interfacial stresses are […]
  • Analytical Form-Finding for Highly Symmetric and Super-Stable Configurations of Rhombic Truncated Regular Polyhedral Tensegrities دی ۱۸, ۱۳۹۷
    Tensegrities have exhibited great importance and numerous applications in many mechanical, aerospace, and biological systems, for which symmetric configurations are preferred as the tensegrity prototypes. Besides the well-known prismatic tensegrities, another ingenious group of tensegrities with high symmetry is the truncated regular polyhedral (TRP) tensegrities, including Z-based and rhombic types. Although Z-based TRP tensegrities have […]
  • A Crack Close to and Perpendicular to an Interface: Resolution of Anomalous Behavior With a Cohesive Zone دی ۱۸, ۱۳۹۷
    In this investigation, we consider a crack close to and perpendicular to a bimaterial interface. If the crack tip is at the interface then, depending on material properties, the order of the stress singularity will be equal to, less than, or greater than one-half. However, if the crack tip is located any finite distance away […]
  • Tunable Two-Way Unidirectional Acoustic Diodes: Design and Simulation دی ۱۸, ۱۳۹۷
    Predeformation simultaneously changes the effective material stiffness as well as the geometric configuration and therefore may be utilized to tune wave propagation in soft phononic crystals (PCs). Moreover, the band gaps of soft PCs, as compared with those of the hard ones, are more sensitive to the external mechanical stimuli. A one-dimensional tunable soft acoustic […]
  • Closed-Form Coordinate-Free Decompositions of the Two-Dimensional Strain and Stress for Modeling Tension–Compression Dissymmetry دی ۱۸, ۱۳۹۷
    The modeling of the different mechanical behaviors of brittle and quasi-brittle materials in tension and compression leads to partitioning of the strain (or stress) tensor into a positive part and a negative part. In this study, applying a recently proposed general method to the two-dimensional (2D) strain and stress tensors, closed-form coordinate-free expressions are obtained […]
  • Local Stress-Field Reconstruction Around Holes in a Plate Using Strain Monitoring Data and Stress Function دی ۳, ۱۳۹۷
    This study reconstructs a two-dimensional stress field from measured strain data. The advantage of using stress functions is that the stress equilibrium and strain compatibility are automatically satisfied. We use the complex stress functions given by the finite series of polynomials. Then, we find the proper set of coefficients required to make the best fit […]
  • Investigation of the State Transition and Moving Boundary in a Pneumatic–Hydraulic Coupled Dielectric Elastomer Actuator دی ۳, ۱۳۹۷
    Compared to robots and devices made of rigid components, soft robots and flexible devices driven by soft active materials possess various advantages including high adaptability under extreme environment and compatibility with a human. Dielectric elastomer (DE) membrane, which is commonly used in building soft actuators, can achieve large actuation by the combined loadings of voltage-induced […]
  • Deployment of a Membrane Attached to Two Axially Moving Beams دی ۳, ۱۳۹۷
    The deployment dynamics of a simplified solar sail quadrant consisting of two Euler–Bernoulli beams and a flexible membrane are studied. Upon prescribing the in-plane motion and modeling the tension field based on linearly increasing stresses assumed on the attached boundaries, the coupled equations of motion that describe the system's transverse deflections are obtained. Based on […]

RSS Journal of Manufacturing Science and Engineering Newest Issue

RSS Journal of Mechanical Design Newest Issue

  • A Gear Load Distribution Model for a Planetary Gear Set With a Flexible Ring Gear Having External Splines دی ۲۱, ۱۳۹۷
    In order to accurately predict ring gear deformations and to investigate the effects of ring gear flexibility on quasi-static behaviors of planetary gear sets, a complete load distribution model of planetary gear sets having flexible ring gears will be formulated here based on the baseline model proposed by the same authors (Hu, Y., Talbot, D., […]
  • Active Resource Allocation for Reliability Analysis With Model Bias Correction دی ۲۱, ۱۳۹۷
    To account for the model bias in reliability analysis, various methods have been developed to validate simulation models using precise experimental data. However, it still lacks a strategy to actively seek critical information from both sources for effective uncertainty reduction. This paper presents an active resource allocation approach (ARA) to improve the accuracy of reliability […]
  • High-Dimensional Reliability-Based Design Optimization Involving Highly Nonlinear Constraints and Computationally Expensive Simulations دی ۲۱, ۱۳۹۷
    Reliability-based design optimization (RBDO) aims at optimizing the design of an engineered system to minimize the design cost while satisfying reliability requirements. However, it is challenging to perform RBDO under high-dimensional uncertainty due to the often prohibitive computational burden. In this paper, we address this challenge by leveraging a recently developed method for reliability analysis […]
  • Investigation on the Backlash of Roller Enveloping Hourglass Worm Gear: Theoretical Analysis and Experiment دی ۲۱, ۱۳۹۷
    This paper proposes a single-roller enveloping hourglass worm gear design and verifies its advantages compared to the existing double-roller worm gear system and the conventional worm gear set. Our hypothesis is that the single-roller worm gear with appropriate configurations and parametric values can eliminate the backlash in mating gear transmission while maintaining advantages of the […]
  • Exploration of Translational Joint Design Using Corrugated Flexure Units With Bézier Curve Segments دی ۲۱, ۱۳۹۷
    In order to satisfy particular design specifications, shape variation for limited geometric envelopes is often employed to alter the elastic properties of flexure joints. This paper introduces an analytical stiffness matrix method to model a new type of corrugated flexure (CF) beam with cubic Bézier curve segments. The cubic Bézier curves are used to depict […]
  • Generating Constructal Networks for Area-to-Point Conduction Problems Via Moving Morphable Components Approach دی ۲۱, ۱۳۹۷
    In this article, we focus on a generative design algorithm for area-to-point (AP) conduction problems in a Lagrangian framework. A physically meaningful continuous area to point path solution is generated through an adaptive growth procedure, which starts from the source point and extends spreading the whole conduction domain. This is achieved by using a set […]
  • Design and Analysis of a Novel Power-Split Infinitely Variable Power Transmission System دی ۲۱, ۱۳۹۷
    In the last few decades, power-split infinitely variable transmission (IVT) systems have attracted considerable attention as they ensure high driving comfort with high total efficiencies, especially in off-highway vehicles and agricultural machines. In this study, a novel power-split-input-coupled IVT system is developed. The effects of various dynamic parameters such as power flow and Willis transmission […]
  • Model-Based Reliability Analysis With Both Model Uncertainty and Parameter Uncertainty دی ۲۱, ۱۳۹۷
    Model-based reliability analysis may not be practically useful if reliability estimation contains uncontrollable errors. This paper addresses potential reliability estimation errors from model bias together with model parameters. Given three representative scenarios, reliability analysis strategies with representative methods are proposed. The pros and cons of these strategies are discussed and demonstrated using a tank storage […]
  • A Review of High-Speed Electro-Hydrostatic Actuator Pumps in Aerospace Applications: Challenges and Solutions دی ۲۱, ۱۳۹۷
    The continued development of electro-hydrostatic actuators (EHAs) in aerospace applications has put forward an increasing demand upon EHA pumps for their high power density. Besides raising the delivery pressure, increasing the rotational speed is another effective way to achieve high power density of the pump, especially when the delivery pressure is limited by the strength […]

RSS Journal of Mechanisms and Robotics Newest Issue

  • Reviewer's Recognition دی ۱۴, ۱۳۹۷
    The Reviewers of the Year Award is given to reviewers who have made an outstanding contribution to the journal in terms of the quantity, quality, and turnaround time of reviews completed during the past 12 months. The prize includes a Wall Plaque, 50 free downloads from the ASME Digital Collection, and a one year free […]
  • Comparison of Grasping Performance of Tendon and Linkage Transmission Systems in an Electric-Powered Low-Cost Hand Prosthesis دی ۳, ۱۳۹۷
    The popularization of fused deposition modeling (FDM) technology and open-source microcontrollers has permitted the explosion of electric hand prostheses that can be designed, shared, built, and operated at a low cost, under the Do It Yourself premise. Patients with limb reductions at the transcarpal or transradial level are best candidates to benefit from them. They […]
  • A Motion Synthesis Approach to Solving Alt-Burmester Problem by Exploiting Fourier Descriptor Relationship Between Path and Orientation Data آذر ۲۶, ۱۳۹۷
    This paper presents a generalized framework to solve m-pose, n-path-points mixed synthesis problems, known as the Alt-Burmester problems, using a task-driven motion synthesis approach. We aim to unify the path and motion synthesis problems into an approximate mixed synthesis framework. Fourier descriptors are used to establish a closed-form relationship between the path and orientation data. […]
  • Optimal Distribution of Active Modules in Reconfiguration Planning of Modular Robots آذر ۲۶, ۱۳۹۷
    Reconfigurability in versatile systems of modular robots is achieved by appropriately actuating individual modular units. Optimizing the distribution of active and passive modules in modular architecture can significantly reduce both cost and energy of a reconfiguration task. This paper presents a methodology for planning this distribution in modular robots, resulting in a minimum number of […]
  • A Relationship Between Sweep Angle of Flapping Pectoral Fins and Thrust Generation آذر ۱۹, ۱۳۹۷
    Propulsive capability of manta rays' flapping pectoral fins has inspired many to incorporate these fins as propulsive mechanisms for autonomous underwater vehicles. In particular, geometrical factors such as sweep angle have been postulated as being influential to these fins' propulsive capability, specifically their thrust generation. Although effects of sweep angle on static/flapping wings of aircrafts/drones […]
  • Design and Testing of a Soft Rehabilitation Glove Integrating Finger and Wrist Function آذر ۱۹, ۱۳۹۷
    This work presents a lightweight soft rehabilitation glove that integrates finger and wrist function by developing and applying the double-DOF soft pneumatic bending actuators (DPBAs). The proposed soft glove can achieve separate as well as coordinated motion exercises of fingers and the wrist, which benefits stroke patients who have complicated hand impairment. It consists of […]
  • A Computational Geometric Approach for Motion Generation of Spatial Linkages With Sphere and Plane Constraints آذر ۱۹, ۱۳۹۷
    This paper studies the problem of spatial linkage synthesis for motion generation from the perspective of extracting geometric constraints from a set of specified spatial displacements. In previous work, we have developed a computational geometric framework for integrated type and dimensional synthesis of planar and spherical linkages, the main feature of which is to extract […]
  • Robotic Visible Forceps Manipulator With a Novel Linkage Bending Mechanism آذر ۱۹, ۱۳۹۷
    In minimally invasive surgery (MIS), surgeons often suffer from occlusion region problems. It is difficult to solve these problems with traditional surgical instruments because of their size and rigid mechanical structure, such as endoscopes and corresponding operating tools. Thus, flexible manipulators and related robotic systems have been proposed for enhancing intraoperative inspection and surgical operation […]
  • Unified Stiffness Characterization of Nonlinear Compliant Shell Mechanisms آذر ۱۹, ۱۳۹۷
    Compliant shell mechanisms utilize spatially curved thin-walled structures to transfer or transmit force, motion, or energy through elastic deformation. To design spatial mechanisms, designers need comprehensive nonlinear characterization methods, while the existing methods fall short of meaningful comparisons between rotational and translational degrees-of-freedom. This paper presents two approaches, both of which are based on the […]
  • An Underactuated PASA Finger Capable of Perfectly Linear Motion With Compensatory Displacement آذر ۱۹, ۱۳۹۷
    This paper presents a novel design for a robotic end effector. In particular, the design features a multifingered underactuated gripper capable of performing parallel and self-adaptive (PASA) grasping. The unique use of an eccentric cam fixed to a modified four-bar linkage mechanism allows the finger to compensate for the typical gap distance found during parallel […]

RSS SOLIDWORKS Tech Blog

  • Design Binder : Smart way to store intellectual data to your Parts and Assemblies دی ۲۷, ۱۳۹۷
    Creating, Storing and Re-using our intellectual design documents can be challenging at times. DFMEA document – a repository for Design Knowledge and Considerations – should always be made available with the Design data with appropriate security and control. Design binder Author information EGS India Managing Director at EGS Computers India Private Limited E G S […]
    EGS India
  • SOLIDWORKS PCB Rookie Camp: Wire or Bus Entry دی ۱۷, ۱۳۹۷
      SOLIDWORKS PCB gives you a winning formula by providing options when entering a bus! A bus carries multiple signals on a single line to help keep your drawings clean and concise. I use 2 options when adding a signal to Author information GSC GSC fuels customer success with 3D engineering solutions for design, simulation, data […]
    GSC
  • Sketching in xDesign – Part 4 دی ۱۰, ۱۳۹۷
    Defining Dimensions in xDesign As we’ve seen, one way to define the size and relationships between sketch objects is through constraints, which allows them to be adjusted in specific ways, depending on how the geometry is updated. Adding dimensions is Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you […]
    SOLIDWORKS
  • Flow Simulation’s Thermal Analysis Capabilities – Part 3 دی ۹, ۱۳۹۷
    For thermal heat transfer analysis, choose SOLIDWORKS Flow Simulation over the Thermal solver in Simulation Professional, Part 3 of 3 Meshing With the exception of very few scenarios, when considering a thermal analysis solver for SOLIDWORKS, you should choose to Author information Joe Galliera Senior Simulation Technical Manager , East area at DS SOLIDWORKS Joe […]
    Joe Galliera
  • 3D Printing a Mechanical Water Droplet دی ۷, ۱۳۹۷
    Designing and 3D printing a mechanical water droplet with the help of Solidworks Assemblies Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you create, simulate, publish, and manage your data. SolidWorks products are easy to learn and use, and work together to help you design products better, faster, and […]
    SOLIDWORKS
  • Sketching in xDesign – Part 3 دی ۶, ۱۳۹۷
    Sketch Entity Relations in xDesign Here, we have a sketch in xDesign that doesn’t have any dimensions added. This sketch is intended to create a mount for a vertical rod, which would be revolved around the left edge to create Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you […]
    SOLIDWORKS
  • How to Export Motion Studies to SOLIDWORKS Visualize Professional دی ۵, ۱۳۹۷
    SOLIDWORKS Visualize Professional has some great tools for going beyond plain static renders. You can create custom animations within Visualize using the keyframe-based Timeline. As of 2017 version, you can also export Animations and Motion Studies created in SOLIDWORKS directly Author information Hawk Ridge Systems Hawk Ridge Systems is your official provider for SOLIDWORKS, CAMWorks, […]
    Hawk Ridge Systems
  • Flow Simulation’s Thermal Analysis Capabilities – Part 2 دی ۳, ۱۳۹۷
    With the exception of very few scenarios, when considering a thermal analysis solver for SOLIDWORKS, you should choose to use Flow Simulation, which is a computational fluid dynamics (CFD) code.  Author information Joe Galliera Senior Simulation Technical Manager , East area at DS SOLIDWORKS Joe Galliera has been with SOLIDWORKS since 2002. Previously he worked […]
    Joe Galliera
  • Don’t Sink the Boat دی ۲, ۱۳۹۷
    Sink marks are a common defect, in plastic injection molding, that are costly to fix, frustrating and not very pleasing! Reducing sink marks early in the design process using SOLIDWORKS Plastics achieves a better finished part. Author information Jeff Osman Jeff Osman has more than 23 years of experience in the mechanical CAD industry. As […]
    Jeff Osman
  • Sketching in xDesign – Part 2 دی ۱, ۱۳۹۷
    The four main sketch entity types used in sketches are shown on the action bar, which are lines, rectangles, arcs, and circles. We’ll go through each of these in this order. Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you create, simulate, publish, and manage your data. SolidWorks products […]
    SOLIDWORKS

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