A Topology Optimization Method for Compliant Mechanisms Based on Static Strength and Fatigue Constraints

A compliant mechanism and topology optimization technology is applied in the field of topology optimization of compliant mechanisms based on static strength and fatigue constraints. local effect

Active Publication Date: 2022-06-07
EAST CHINA JIAOTONG UNIVERSITY
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the compliant mechanism obtained by the existing topology optimization method is often difficult to meet the requirements of static strength and fatigue strength, so it cannot meet the needs of actual engineering

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Topology Optimization Method for Compliant Mechanisms Based on Static Strength and Fatigue Constraints
  • A Topology Optimization Method for Compliant Mechanisms Based on Static Strength and Fatigue Constraints
  • A Topology Optimization Method for Compliant Mechanisms Based on Static Strength and Fatigue Constraints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0106] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0107] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0108] refer to figure 1 , the present invention provides a topology optimization design method of compliant mechanism based on static strength and fatigue constraints, comprising the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a topology optimization method for a compliant mechanism based on static strength and fatigue constraints, which includes the following steps: evaluating the static strength and fatigue strength of a compliant mechanism; converting the static strength and fatigue constraints of the mechanism into different stress constraints, and converting the Various stress constraints are condensed into different global stress constraints; the objective function is to maximize the output displacement, and the static strength, fatigue, and volume are used as constraints to construct a topology optimization model of a compliant mechanism based on static strength and fatigue constraints; sensitivity analysis is performed using Mapping and filtering correct the sensitivity, solve the topology optimization problem, iterate until the convergence criterion is satisfied, and obtain the optimal topology configuration of the compliant mechanism. The invention utilizes the signed von Mises and the modified Goodman fatigue criterion to optimize the topology of the compliant mechanism based on the static strength and fatigue constraints, and the obtained compliant mechanism can meet the requirements of the static strength and fatigue strength, and effectively avoid the hinge-like structure.

Description

technical field [0001] The invention relates to the related technical field of compliant mechanism design, in particular to a compliant mechanism topology optimization method based on static strength and fatigue constraints. Background technique [0002] The compliant mechanism is a new type of assembly-free mechanism that uses the deformation of flexible elements to transmit motion, force or energy. Compared with the traditional rigid mechanism, it has the following advantages: 1) material saving, low manufacturing cost; 2) no assembly, high precision; 3) no need for lubrication; 4) easy integration of modern drive technology. Due to the above advantages of the compliant machine, it has a wide range of applications in the fields of micro-electromechanical systems, micro / nano manufacturing, precision positioning, precision operation, precision and ultra-precision machining. [0003] At present, topology optimization method is a common design method for compliant mechanisms....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/23G06F111/04G06F119/14
CPCG06F30/17G06F30/23G06F2119/14G06F2111/04Y02T90/00
Inventor 占金青孙宇汪庭威刘敏尹来容赵延
Owner EAST CHINA JIAOTONG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap