DAS-2D: a concept design tool for compliant mechanisms

Abstract

Abstract.Compliant mechanisms utilize the deformation of the elastic members to achieve the desired motion. Currently, design and analysis of compliant mechanisms rely on several commercial dynamics and finite element simulation tools. However, these tools do not implement the most recently developed theories in compliant mechanism research. In this article, we present DAS-2D (Design, Analysis and Synthesis), a conceptual design tool which integrates the recently developed pseudo-rigid-body models and kinetostatic analysis/synthesis theories for compliant mechanisms. Coded in Matlab, the software features a kinematic solver for general rigid-body mechanisms, a kinetostatic solver for compliant mechanisms and a fully interactive graphical user interface. The implementation details of all modules of the program are presented and demonstrated with four different case studies. This tool can be beneficial to classroom teaching as well as engineering practices in design of compliant mechanisms.

An Energy-Based Framework for Nonlinear Kinetostatic Modeling of Compliant Mechanisms Utilizing Beam Flexures

“…The pseudo-rigid-body model (PRBM) [1] offers an easy way to calculate the strain energy stored in a compliant mechanism (by adding up the energies stored in the equivalent springs at all the pseudo joints). For example, Jensen et al [18,19] used PRBM-based strain energy expression to identify multistable configurations and to solve for the kinetostatic behaviors, and Turkkan and Su [2] developed a conceptual design tool for compliant mechanisms called DAS-2D in which PRBM-based strain energy formulation combined with a minimization energy scheme was employed, which was further adopted by Venkiteswaran et al [20] for topology optimization of compliant mechanisms. However, inherent lumped-compliance assumptions lead to relative large errors for energy calculations [21,22].…”

“…Compliant mechanisms, which achieve at least some of their mobility from the deflection of flexible segments rather than from articulated joints only, offer many advantages such as energy storage, increased precision, and reduced wear, backlash and part number [1]. Because the motion of a compliant mechanism involves elastic deflections, kinematic analysis should be accompanied by static analysis to determine the relation between loads and resulting mechanism motion [2]. The combination of kinematic analysis and static analysis is termed kinetostatic modeling.…”

A Versatile 3R Pseudo-Rigid-Body Model for Initially Curved and Straight Compliant Beams of Uniform Cross Section

“…(3)- (13)). This has been proven to be a fast and effective method for calculating the deformation of compliant mechanisms using the PRB modeling approach [31].…”

Optimal design and analysis of inner hole positioning mechanism based on MATLAB

“…The stretched film has high transparency, low squeezing force, high strength and good tear resistance. The cold stretch casing film packaging has the advantages of high work efficiency, ensuring the safety and reliability of the goods, and good visual effects [6][7][8]. In addition, the film packaging technology has a waterproof and dustproof packaging effect, which is especially suitable for the packaging of cables and plastic films, and is widely, used in construction, chemical, food and other industries [9][10][11].…”