Congcong Xu, Gangfeng Liu, Changle Li, Xuehe Zhang, Jie Zhao
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引用次数: 0
Abstract
Low impact docking mechanism (LIDM) is a key fundamental equipment for space missions that is used to capture and connect vehicles. Its strict requirements for mass and volume makes a major challenge to achieve larger workspace and load capacity (the docking direction is maximum). Essentially, it is a Gough–Stewart platform (SP), and the main design difficulties are configuration design and dimension optimization. The paper proposed a new integrated joint and SP classification, which guide the configuration design. Meanwhile, a unified kinematics model is established by the vector method, and the force Jacobian matrix is obtained by the principle of virtual work. The key to dimension optimization is to seek a reasonable evaluation index. A proposed general evaluation index, task-oriented force ellipsoid (TOFE), is applicable to both isotropic and anisotropic design demands. It normalizes the input and output, transforms an anisotropic problem into an isotropic problem, and uses the smallest hypersphere radius as the characterization. Then, using non-dominated sorting genetic algorithm (NSGA-II) obtain the Pareto front of the workspace and load capacity. Moreover, the influence of dimension parameters on output performance was revealed. Finally, the dimension optimization of the LIDM is completed, and its load capacity is improved by 13.51%.
期刊介绍：
It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design.
Analytical synopsis of contents:
The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design:
Intelligent Design:
Nano-engineering and Nano-science in Design;
Smart Materials and Adaptive Structures in Design;
Mechanism(s) Design;
Design against Failure;
Design for Manufacturing;
Design of Ultralight Structures;
Design for a Clean Environment;
Impact and Crashworthiness;
Microelectronic Packaging Systems.
Advanced Materials in Design:
Newly Engineered Materials;
Smart Materials and Adaptive Structures;
Micromechanical Modelling of Composites;
Damage Characterisation of Advanced/Traditional Materials;
Alternative Use of Traditional Materials in Design;
Functionally Graded Materials;
Failure Analysis: Fatigue and Fracture;
Multiscale Modelling Concepts and Methodology;
Interfaces, interfacial properties and characterisation.
Design Analysis and Optimisation:
Shape and Topology Optimisation;
Structural Optimisation;
Optimisation Algorithms in Design;
Nonlinear Mechanics in Design;
Novel Numerical Tools in Design;
Geometric Modelling and CAD Tools in Design;
FEM, BEM and Hybrid Methods;
Integrated Computer Aided Design;
Computational Failure Analysis;
Coupled Thermo-Electro-Mechanical Designs.
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