Abstract
A topology optimization problem is framed using boundary conditions that involve load magnitude and direction. The generated optimal topology is dependent on the direction of load rather than magnitude. Thus, for a dynamic situation, multiple optimal topologies are obtained. This study proposes a method to generate a single superior topology using superimposition and post-refinement by Gaussian image-processing technique. The dynamic loading condition is discretized using (a) uniform and (b) performance-based non-uniform criteria. Three image-processing parameters are applied to retain the desired volume fraction and simplify the topology from a manufacturing aspect. A one-degree-of-freedom manipulator link is considered as an example. Solid isotropic material with penalization method is selected to update the design variables. The programmable logic controller with human-machine interface-based experimental setup is used to validate the simulation results. The synthesized topology (50 % mass reduction) from the non-uniform increment method performs best among all uniform approaches and individual topologies.
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Abbreviations
- SIMP :
-
Solid isotropic material with penalization
- TO :
-
Topology optimization
- HMI :
-
Human-machine interface
- PLC :
-
Program logic control
- DAQ :
-
Data acquisition
- DOF :
-
Degree of freedom
- ESL :
-
Equivalent static load
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This research work was supported by the Department of Science and Technology — Science and Engineering Research Board, India (Grant Number ECR/2017/000799).
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Lakshmi Srinivas G is a Ph.D. scholar at Birla Institute of Technology and Science (BITS) Hyderabad Campus, India. He received his M. Tech. in Mechanical Engineering from JNTU-H. His research interests include topology optimization, robotics, and automation systems.
Arshad Javed is an Assistant Professor at the Mechanical Engineering Department, BITS Pilani Hyderabad campus. He obtained his Ph.D. from the same institution. His research interests include topology optimization, micro mechanisms, mechatronics, and micro systems.
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Srinivas, G.L., Javed, A. A novel method to synthesize a single topology for dynamically loaded members. J Mech Sci Technol 35, 1549–1557 (2021). https://doi.org/10.1007/s12206-021-0319-4
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DOI: https://doi.org/10.1007/s12206-021-0319-4