Minimization of driving force ripple of linear motor for rope-less elevator using topology optimization technique

2007 ◽  
Vol 181 (1-3) ◽  
pp. 131-135 ◽  
Author(s):  
Yoshifumi Okamoto ◽  
Norio Takahashi
Keyword(s):  
Topology Optimization ◽  
Driving Force ◽  
Optimization Technique ◽  
Linear Motor ◽  
Force Ripple

Adapting Ant Colony for Topology Optimization of Compliant Mechanisms With Variable Material Density

2017 ◽  
Author(s):  
Nadim Diab
Keyword(s):  
Topology Optimization ◽  
Ant Colony Optimization ◽  
High Performance ◽  
Compliant Mechanisms ◽  
Optimization Technique ◽  
Optimization Techniques ◽  
Ant Colony ◽  
Intensity Level ◽  
Material Density ◽  
Swarm Intelligence Optimization

Swarm intelligence optimization techniques are widely used in topology optimization of compliant mechanisms. The Ant Colony Optimization has been implemented in various forms to account for material density distribution inside a design domain. In this paper, the Ant Colony Optimization technique is applied in a unique manner to make it feasible to optimize for the beam elements’ cross-section and material density simultaneously. The optimum material distribution algorithm is governed by two various techniques. The first technique treats the material density as an independent design variable while the second technique correlates the material density with the pheromone intensity level. Both algorithms are tested for a micro displacement amplifier and the resulting optimized topologies are benchmarked against reported literature. The proposed techniques culminated in high performance and effective designs that surpass those presented in previous work.

Evolutionary Topology Optimization of Spatial Steel-Concrete Structures

2021 ◽  
Vol 62 (2) ◽  
pp. 102-112
Author(s):  
Yu Li ◽  
Yi Min Xie
Keyword(s):  
Topology Optimization ◽  
Composite Structures ◽  
Optimization Technique ◽  
Optimization Techniques ◽  
Principal Stresses ◽  
Element Analysis ◽  
Floor Systems ◽  
Beso Method ◽  
Multiple Materials ◽  
Single Material

Topology optimization techniques based on finite element analysis have been widely used in many fields, but most of the research and applications are based on single-material structures. Extended from the bi-directional evolutionary structural optimization (BESO) method, a new topology optimization technique for 3D structures made of multiple materials is presented in this paper. According to the sum of each element's principal stresses in the design domain, a material more suitable for this element would be assigned. Numerical examples of a steel- concrete cantilever, two different bridges and four floor systems are provided to demonstrate the effectiveness and practical value of the proposed method for the conceptual design of composite structures made of steel and concrete.

Theoretical Study of Solar Car Based on Finite Element

2014 ◽  
Vol 933 ◽  
pp. 603-607
Author(s):  
Ding Yue Chen ◽  
Li Hao Chen ◽  
Feng Lin ◽  
Dong Xu ◽  
An Chang
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Optimization Design ◽  
Theoretical Study ◽  
Optimization Technique ◽  
Cost Effective ◽  
Convincing Evidence ◽  
Car Body ◽  
Effective Manner ◽  
The Relationship

This paper is concerned with an optimization design for the solar car body under a single load is carried out by using finite element optimization design (FEOD) model. Topology optimization and sizing optimization are explored to find out an optimal manufacturing feasible design from multiple optimized designs of material reinforcement of the solar car body for rigidity improvement. The application of these methods demonstrates that through innovative utilization of the topology optimization technique, an optimal manufacturing feasible design can be obtained. The relationship between the rigidity improvement and different configuration of material reinforcement is also investigated. It is concluded that through appropriate application of FEOD methods, the overall rigidity of the solar car body framework can be improved substantially in a cost effective manner and provides more convincing evidence for optimization design of the solar car body. The results demonstrate that the optimized solar car body is safer and lighter.

Design and Development of XY Micro-Positioning Stage Using Modified Topology Optimization Technique

2014 ◽  
Vol 592-594 ◽  
pp. 2220-2224 ◽  
Author(s):  
T. Ramesh ◽  
Ramalingam Bharanidaran ◽  
V. Gopal
Keyword(s):  
Finite Element Method ◽  
Topology Optimization ◽  
Compliant Mechanism ◽  
Optimization Technique ◽  
Optimization Techniques ◽  
Structural Performance ◽  
Interpolation Function ◽  
Positioning Stage ◽  
Final Design ◽  
Node Connectivity

XY positioning stages are fundamental components during precision manipulation of micro sized objects. A compliant mechanism based mechanism is the appropriate choice for the design of XY stage. Topology optimization techniques are utilized to design the compliant mechanism. During the process of topology optimization, senseless regions are appearing from the manufacturability perspective. Senseless regions are staircase boundaries and node to node connectivity which is impossible to manufacture. Interpolation function is included in the topology optimization to minimize the effect of senseless regions. However topologically developed design is post processed to attain the manufacturability. Structural performance of the post processed final design is validated through Finite Element Method (FEM) and experimental technique.

A Simple Force Ripple Compensation Method for Linear Motor Servo System

2006 ◽  
Author(s):  
Jiachun Lin ◽  
Wei Li ◽  
Tong Zhao ◽  
Tianfeng Zhou ◽  
Xiankui Wang ◽  
...  
Keyword(s):  
Servo System ◽  
Linear Motor ◽  
Compensation Method ◽  
Force Ripple

scholarly journals FAULT SHAPE DETECTION BASED ON TOPOLOGY OPTIMIZATION TECHNIQUE

2015 ◽  
Vol 71 (4) ◽  
pp. I_21-I_31
Author(s):  
Hidetaka SAOMOTO ◽  
Yuko KASE ◽  
Hiroshi MORI ◽  
Masayuki YOSHIMI ◽  
Haruo HORIKAWA ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Optimization Technique ◽  
Shape Detection

Development of a Material Mixing Method for Topology Optimization of a Structure with Multiple Thermal Criteria

2007 ◽  
Vol 353-358 ◽  
pp. 2832-2835
Author(s):  
Seok Young Han ◽  
M.S. Kim ◽  
S.H. Choi ◽  
J.Y. Park ◽  
Byung Ju Yi
Keyword(s):  
Topology Optimization ◽  
Thermal Stress ◽  
Thermal Environment ◽  
Thermal Flux ◽  
Optimization Technique ◽  
Circuit Board ◽  
Optimal Topology ◽  
Combination Strategy ◽  
Mixing Method ◽  
Material Mixing

A material mixing method to obtain an optimal topology for a structure in a thermal environment was suggested. This method is based on Evolutionary Structural Optimization (ESO). The proposed material mixing method extends the ESO method to a mixing several materials for a structure in the multicriteria optimization of thermal flux and thermal stress. To do this, the multiobjective optimization technique was implemented. The overall efficiency of material usage was measured in terms of the combination of thermal stress levels and heat flux densities by using a combination strategy with weighting factors. Optimal topologies having multiple thermal criteria for a printed circuit board (PCB) substrate were presented to illustrate validity of the suggested material mixing method. It was found that the suggested method works very well for the multicriteria topology optimization.

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