A Prenecking Strategy Makes Stretched Membranes With Clamped Ends Wrinkle-Free

2017 ◽  
Vol 84 (6) ◽  
Author(s):  
Ming Li ◽  
Yangjun Luo ◽  
HuaPing Wu ◽  
Kai Zhu ◽  
Yanzhuang Niu ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Design Optimization ◽  
Computer Aided Design ◽  
Discrete Topology ◽  
Shape Accuracy ◽  
Computer Aided ◽  
Out Of Plane ◽  
Promising Solution ◽  
Aided Design ◽  
Graphene Membranes

For both polyimide membranes in aerospace and graphene membranes in nanoelectronics with surface accuracy requirements, wrinkles due to the extreme out-of-plane flexibility yield inverse influences on the properties and applications of membranes. In this study, on the basis of discrete topology optimization, we propose a prenecking strategy by adopting elliptical free edges to suppress the stretch-induced wrinkling. This prenecking strategy with the computer-aided-design (CAD)-ready format is versatile to eliminate wrinkles in stretched membranes with clamped ends and achieve wrinkle-free performances. The wrinkle-free capability of the prenecking strategy, capable of satisfying the shape accuracy requirements, indicates that by suffering insignificant area loss, concerning of wrinkling problems in membranes is no further required. As compared with the existing researches focusing on studying wrinkling behaviors, the prenecking strategy offers a promising solution to the stretch-induced wrinkling problem by eliminating wrinkles through design optimization.

scholarly journals Design optimization and FEM Analysis of a Floating Caliper for BAJA ATV Vehicles

2020 ◽  
Vol 5 (2) ◽  
pp. 30-39
Author(s):  
Shubham Upadhyaya ◽  
◽  
Rakesh Chander Saini ◽  
Ramakant Rana
Keyword(s):  
Design Optimization ◽  
Computer Aided Design ◽  
Fem Analysis ◽  
Design Model ◽  
Manufacturing Cost ◽  
Brake Pad ◽  
Computer Aided ◽  
Stress And Deformation ◽  
Aided Design ◽  
Ansys Workbench

In this paper, our aim is to design and built a lightweight single-piston floating caliper, without compromising the performance. The aim is to design a caliper as simple as possible so that the manufacturing cost would be low. Mounting position can also be varied in this design. To make the caliper lighter it is necessary to remove material, Aluminium 7075 is used as the material, and Asbestos is taken as the brake pad material. To maintain the stiffness the material has to be used in a more efficient way. A computer-aided design model of a brake caliper is created in Solidworks and analyzed for stress and deformation in ANSYS Workbench.

scholarly journals Assessment of Computer-Aided Design Tools for Topology Optimization of Additively Manufactured Automotive Components

2021 ◽  
Vol 11 (22) ◽  
pp. 10980
Author(s):  
Enrico Dalpadulo ◽  
Fabio Pini ◽  
Francesco Leali
Keyword(s):  
Topology Optimization ◽  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Combustion Engine ◽  
Element Model ◽  
Optimization Techniques ◽  
Theory And Practice ◽  
Design Tools ◽  
Computer Aided ◽  
Aided Design

The use of Topology Optimization techniques has seen a great development since the last decade. The principal contributor to this trend is the widespread use of Additive Manufacturing technologies to effectively build complex and performant structures over different settings. Nevertheless, the use of Topology Optimization in Design for Additive Manufacturing processes is not simple and research aims to fill the gap between theory and practice by evolving at the same time both approaches, workflows, and design software that allow their implementation. Since a strong connection between methodologies and tools exists, this work proposes a method to assess computer-aided design tools or platforms. This can be applied to sustain the key phase for selection and adoption of the computer-aided tools in industrial settings embracing Additive Manufacturing. The workflow for Topology Optimization implementation, the structure of the proposed evaluation approach, and its application, are presented to demonstrate effective usability. The automotive case study is the redesign of internal combustion engine piston to benefit of metal Additive Manufacturing based enhanced product performance. A preliminary finite element model is defined and a Topology Optimization based redesign is concurrently set up through four different commercial computer-based platforms. The method accounting for the assessment of required operations for the design optimization is applied to perform the tools selection phase.

scholarly journals Cloud-Based CAD Parametrization for Design Space Exploration and Design Optimization in Numerical Simulations

2020 ◽  
Author(s):  
Joel Guerrero ◽  
Luca Mantelli ◽  
Sahrish B. Naqvi
Keyword(s):  
Numerical Simulation ◽  
Design Optimization ◽  
Computer Aided Design ◽  
Design Space Exploration ◽  
Design Space ◽  
Space Exploration ◽  
Surrogate Based Optimization ◽  
Computer Aided ◽  
Computational Resources ◽  
Aided Design

In this manuscript, an automated framework dedicated to design space exploration and design optimization studies is presented. The framework integrates a set of numerical simulation, computer-aided design, numerical optimization, and data analytics tools using scripting capabilities. The tools used are open-source and freeware, and can be deployed on any platform. The main feature of the proposed methodology is the use of a cloud-based parametrical computer-aided design application, which allows the user to change any parametric variable defined in the solid model. We demonstrate the capabilities and flexibility of the framework using computational fluid dynamics applications; however, the same workflow can be used with any numerical simulation tool (e.g., a structural solver or a spread-sheet) that is able to interact via a command line interface or using scripting languages. We conduct design space exploration and design optimization studies using quantitative and qualitative metrics, and to reduce the high computing times and computational resources intrinsic to these kinds of studies, concurrent simulations and surrogate-based optimization are used.

scholarly journals Generative Design of a Mechanical Pedal

2021 ◽  
Vol 6 (1) ◽  
pp. 48-58
Author(s):  
Mohammad Musa Nisar ◽  
Salman Zia ◽  
Mahmoud Fenoon ◽  
Omar Alquabeh
Keyword(s):  
Finite Element Analysis ◽  
Topology Optimization ◽  
Computer Aided Design ◽  
Technology Development ◽  
Numerical Algorithms ◽  
Generative Design ◽  
Element Analysis ◽  
Design Exploration ◽  
Computer Aided ◽  
Aided Design

Nowadays, there are various tools that support the initial stages of design available to use for engineers, the traditional Computer-Aided Design (CAD) has been implemented in the engineering components design and replaced manual drafting. However, with the advances and the rapid technology development, new trends emerged to cope with this evolution, namely, Generative Design, Topology Optimization, and Generative Engineering Design. The method is based on numerical algorithms that generate a variety of design and modelling options based on the criteria and constraints set by the designer to allow further design exploration. Proposed in this paper is an implementation of the generative design of a mechanical pedal with further finite element analysis.

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