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您的检索式：关键字=Lightweight optimization
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| 1 | Lightweight Topology Optimization with Buckling and Frequency Constraints Using the Independent Continuous Mapping Method显示文摘This research focuses on the lightweight topology optimization method for structures under the premise of meeting the requirements of stability and vibration characteristics. A new topology optimization model with the constraints of natural frequencies and critical buckling loads and the objective of minimizing the structural volume is established and solved based on the independent continuous mapping method. The eigenvalue equations and composite exponential filter functions are applied to convert the optimization formulation into a continuous, solvable mathematical programming model. In the process of topology optimization, suitable initial values of the filter functions are chosen to avoid local modes, and the dynamic frequency gap constraints are added in the optimal model to prevent mode switches. Furthermore, for the optimal structures with grey elements obtained by the continuous optimization model, the bisection-inverse iteration is applied to search the optimal discrete structures. Finally, a detailed scheme is given for the buckling and frequency topology optimization problem. Numerical examples illustrate that the modelling method of minimizing the economic index with given performance requirements is practical and feasible for multi-performance topology optimization problems. | Hongling Ye Yunkang Sui Weiwei Wang | 2019 | Acta Mechanica Solida Sinica2019，32，3： | 3 |
| 2 | Lightweight Frame Topology Optimization Method Based on Multi-objective显示文摘The application of new materials is an important direction for automotive lightweighting.On the basis of ensuring the comprehensive performance of components,the optimization of new material structures through topology optimization methods can further improve the level of lightweight components.This paper takes the automobile frame as the research object,based on the magnesium alloy,studies the frame topology with the objective function of mass and strength under multiple working conditions,and realizes the lightweight of the automobile frame structure through the multi-objective topology optimization method.According to the topological optimization method of penalty function for solid isotropic materials,the objective function of the quality topology optimization and the objective function of intensity topology optimization under multi-operating conditions are defined by the compromised programming approach.This method avoids the disadvantage that single-target topology optimization cannot consider other factors and is suitable for multi-objective topology optimization of continuum structures. | Rui Lyu Hai Liu Dongying Ju | 2018 | 材料科学与工程(中英文B版)2018，8，2： | 0 |
| 3 | Multi-objective Optimization Design of Magnesium Alloy Wheel Based on Topology Optimization显示文摘Lightweight of automatic vehicle is a significant application trend,using topology optimization and magnesium alloy materials is a valuable way.This article designs a new model of automobile wheel and optimizes the structure for lightweight.Through measuring and analyzing designed model under static force,clear and useful topology optimization results were obtained.Comparing wheel performance before and after optimization,the optimized wheel structure compliance with conditions such as strength can be obtained.Considering three different materials namely magnesium alloy,aluminum alloy and steel,the stress and strain performances of each materials can be obtained by finite element analysis.The reasonable and superior magnesium alloy wheels for lightweight design were obtained.This research predicts the reliability of the optimization design,some valuable references are provided for the development of magnesium alloy wheel. | JIANG Xin LIU Hai Yoshio Fukushima Minoru Otake Naoki Kawada ZHANG Zhenglai JU Dongying | 2019 | 材料科学与工程(中英文B版)2019，9，1： | 0 |
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