Heat Conduction Structural Topology Optimization Based on RAMP

2011 ◽  
Vol 52-54 ◽  
pp. 1692-1697 ◽  
Author(s):  
Jia Chun Li ◽  
Wen Te Tu ◽  
Xu Dong Yang ◽  
Jian Fu ◽  
Yong Tao Wang
Keyword(s):  
Temperature Field ◽  
Topology Optimization ◽  
Heat Conduction ◽  
Optimization Design ◽  
Engineering Application ◽  
Optimization Techniques ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Design Problems ◽  
Numerical Instabilities

Based on topology optimization techniques of structural mechanics, an effective method for solving the structural design problems of heat transfer is presented in this paper. The topology optimization model of heat conduction is then constructed and the corresponding Optimization Criteria based on density approach is inferred to solve the optimal heat conduction equation of temperature field. A Filtering technique is employed in density field to eliminate numerical instabilities in the process of topology optimization. Some numerical examples are presented to demonstrate the accuracy and the applicability of the present method, theory and algorithm. This research provides a new idea and an access to the structural topology optimization design of temperature field, and is of good engineering application value.

Topology Optimization in the Conceptual Design: Take the Frame of a Bender as Example

2011 ◽  
Vol 267 ◽  
pp. 297-301
Author(s):  
Yong Wang ◽  
Guo Niu Zhu ◽  
Bo Yu Sun
Keyword(s):  
Topology Optimization ◽  
Design Process ◽  
Mechanical Design ◽  
Cost Effective ◽  
Optimization Techniques ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Effective Manner ◽  
Stress And Deformation ◽  
Design Proposal

The paper is concerned with topology optimization in the mechanical design process. The disadvantage of current process of mechanical design is discussed and a new design process based on structural topology optimization is presented. The design process with structural topology optimization in mechanical design is discussed by the example of the frame of a bender. Static analysis is made to the original model first according to the whole structure and working characteristic of the machine, the stress and deformation distribution are obtained and then topology optimization is carried out. On the basis of topology optimization, the layout of the initial design proposal is obtained and the weight of the frame is substantially reduced while the performance enhanced. The application of the method demonstrates that through innovative utilization of the topology optimization techniques, the conceptual proposals can be obtained and the overall mechanical design process can be improved substantially in a cost effective manner.

scholarly journals Structural topology optimization with strength and heat conduction constraints

2014 ◽  
Vol 276 ◽  
pp. 341-361 ◽  
Author(s):  
Akihiro Takezawa ◽  
Gil Ho Yoon ◽  
Seung Hyun Jeong ◽  
Makoto Kobashi ◽  
Mitsuru Kitamura
Keyword(s):  
Topology Optimization ◽  
Heat Conduction ◽  
Structural Topology Optimization ◽  
Structural Topology

Structural Topology Optimization for Street Lamp Bracket

2011 ◽  
Vol 464 ◽  
pp. 655-659
Author(s):  
Yong Wang ◽  
Guo Niu Zhu ◽  
Zheng Wei Zhu
Keyword(s):  
Topology Optimization ◽  
Conceptual Design ◽  
Development Process ◽  
Positive Impact ◽  
Mechanical Design ◽  
Optimization Techniques ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
General Acceptance ◽  
Street Lamp

Structural topology optimization has got a general acceptance in recent years in mechanical design due to its powerful technique for conceptual design. The shortcoming of current development process of mechanical design is discussed and a new approach with structural topology optimization is put forward. The application of the method demonstrates that through innovative utilization of the topology optimization techniques, a multitude of conceptual design proposals based on the design space and design targets can be obtained and then a CAD model with high quality which has a positive impact on the development process is also available.

Structural Topology Optimization of the Column of Form Grinding Machine

2010 ◽  
Vol 455 ◽  
pp. 397-401
Author(s):  
S.G. Yao ◽  
Hang Li
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Optimization Method ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Constraint Condition ◽  
Structural Dynamic ◽  
Structural Dynamic Model ◽  
Grinding Machine ◽  
Topology Optimization Method

Based on Topology optimization method of continuum the structural dynamic model has been built by constraint condition of volume and objective function of column natural frequency. In order to improve precision the dynamic characteristics of non-design region have been considered in optimization process. The column of structural optimization design has been done by applying topology optimization. The quality has not only reduced, but also the dynamic characteristic of the column has been improved. Thus the design effect has been reached.

Structure Topology Optimization Design for Compression Box of Horizontal Preloading Domestic Waste Transfer Station

2013 ◽  
Vol 475-476 ◽  
pp. 1382-1386
Author(s):  
Hui Zhou ◽  
Gang Yan Li ◽  
Yuan Zhang ◽  
Le Li
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Bottom Plate ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Domestic Waste ◽  
Side Plate ◽  
Structure Topology ◽  
Transfer Station ◽  
Waste Transfer

Horizontal preloading domestic waste transfer station is the core equipment for domestic waste disposal. Compression equipment is the elementary equipment of horizontal preloading domestic waste transfer station, which should be ensured its mechanical properties and structural lightweight. According to the compression box structure in this paper, structural topology optimization model is established. By using HyperWorks software, the result of structural topology optimization result of compression box is obtained. Based on the result of topology optimization, the structural improvement design model of compression box is established, and the number, location, size of strengthening rib for bottom plate, top plate, side plate are optimal designed so as to realize structural lightweight.

Topology Optimization Design of Pure Electric Unitized Body

2014 ◽  
Vol 574 ◽  
pp. 167-172
Author(s):  
Zhe Zhang ◽  
Ying Chao Zhang ◽  
Jing Mei Jin ◽  
Bo Guo ◽  
Ming Chi ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
3D Model ◽  
Shell Element ◽  
Element Model ◽  
Beam Element ◽  
Design Team ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
The Future

According to the model devised by the design team of PACE Future Bus and the layout size of pure electric coaches in the market, we used CATIA to make a 3D model and made Topology optimization design by using HyperWorks. After that, we imposed loading according to specific conditions and made structural topology optimization and sized optimization design. Then we checked the coach skeleton beam element model and the strength of shell element model. Finally, the future bus frame was built completely.

Evolutionary Optimization Design of the Structural Dynamic Characteristics under Multi Constraints

2010 ◽  
Vol 29-32 ◽  
pp. 906-911
Author(s):  
Zhi Ying Mao ◽  
Guo Ping Chen ◽  
Huan He
Keyword(s):  
Topology Optimization ◽  
Dynamic Characteristics ◽  
Mode Shape ◽  
Optimization Design ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Sensitivity Equation ◽  
Structural Dynamic ◽  
Nodal Lines ◽  
Structural Dynamic Characteristics

This paper studies structural topology optimization, and the position of mode shape nodal lines is introduced to the equation as a constraint firstly. It builds the sensitivity equation of the position of mode shape nodal lines and frequency. Thereafter, the element deletion criterion with frequency and position of mode shape nodal lines constraints is afford. Then on the base above, it provides the fit path of topology optimization with constraints of frequency and the position of mode shape nodal lines. Finally, a numerical example demonstrates that the method used in this paper is effectively.

A new bilateral density filter with cross template for structural topology optimization

2017 ◽  
Vol 232 (21) ◽  
pp. 3823-3832
Author(s):  
Xiaokui Xu ◽  
Baofeng Guo ◽  
Miao Jin
Keyword(s):  
Topology Optimization ◽  
Compliant Mechanism ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Local Minima ◽  
Stable Convergence ◽  
Edge Preserving ◽  
Compliance Minimization ◽  
Density Filter ◽  
Numerical Instabilities

To suppress numerical instabilities and ensure manufacturability in density-based topology optimization, restrictions are required to be used. In this paper, a new bilateral density filter is presented. Different from the original bilateral density filter, the new filter uses a cross template and the range operator is changed. The purpose is to improve the ability of edge-preserving smoothing. Moreover, a continuation scheme for the new range operator is given to ensure a stable convergence to 0–1 solutions and avoid falling into local minima. The performance of the new filter for compliance minimization problem and compliant mechanism problem is demonstrated by application examples.

Towards Structural Topology Optimization of Rotor Blisks

2018 ◽  
Author(s):  
Enrico Boccini ◽  
Enrico Meli ◽  
Andrea Rindi ◽  
Lorenzo Pinelli ◽  
Lorenzo Peruzzi ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Additive Manufacturing ◽  
Current Trend ◽  
Three Dimensional ◽  
Optimization Techniques ◽  
Structural Topology Optimization ◽  
Concept Design ◽  
Structural Topology ◽  
Disk Model ◽  
Manufacturing Techniques

The current trend in turbomachinery is pushing forward more and more efficient machines, increasing speeds, reducing components mass and improving their vibrational behaviour. Structural topology optimization is a challenging and promising approach to satisfy all these demands, with a very remarkable economic impact. This approach enables the creation of structures characterized by complex three-dimensional geometries, which are usually difficult or impossible to be produced using traditional manufacturing processes. However, thanks to innovative technologies, as new additive manufacturing techniques, it is now possible to effectively exploit topology optimization to develop innovative components. The aim of this work is to demonstrate the applicability of structural topology optimization techniques in turbomachinery, to improve the dynamic performances and vibrational behaviour of critical components. A 3D mock-up blade geometry based on T106 profile has been designed to reproduce a typical rotor blade in design conditions. The blade has been mounted on a rough disk model, to obtain a rotor blisk in order to ensure a wide design space for the optimization. The optimization has been carried out by applying mean and fluctuating loads coming from a 3D unsteady computation of 1.5stage (stator-rotor-stator) together with the centrifugal stresses. The unsteady loads acting on the rotor skin are due to the wake of the upstream stator and the potential field generated by the downstream stator. A new concept design for the blisk has been developed and the optimized geometry has been compared to the original one to highlight the improvements in terms of mass reduction and improved dynamic behaviour. This paper will confirm the suitability of this approach to turbomachinery components and a prototype of optimized geometry will be ready to be manufactured through innovative additive manufacturing techniques for high resistance alloys.

Research on Techniques of Structural Topology Optimization Using Cellular Automaton

2011 ◽  
Vol 308-310 ◽  
pp. 987-993
Author(s):  
Yi Xian Du ◽  
Wei Wang ◽  
Qi Hua Tian ◽  
Jin Run Hu
Keyword(s):  
Topology Optimization ◽  
Cellular Automaton ◽  
Optimization Design ◽  
Mechanical Response ◽  
Optimization Problems ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
Computationally Efficient ◽  
Local Rule ◽  
Loaded Structure

By integrating cellular automaton (CA) theory into topology optimization of continuum, the local rule is defined for sensitivity analysis and updating of the design variable, according to the analysis of the structural mechanical response. Topology optimization design of loaded structure is conducted using minimal compliance as the optimization objective. The optimal distribution of material in the design domain is finally obtained. Comparing to other algorithms, the local rule has proved to be computationally efficient to solve structural topology optimization problems. The resulting optimal structures are free of numerical instabilities such as the checkerboard patterns and mesh dependency.

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