A multilevel product model for simulation-based design of mechanical systems

被引:9
作者
Chang, KH
Choi, KK
Wang, J
Tsai, CS
Hardee, E
机构
[1] Univ Oklahoma, Sch Aerosp & Mech Engn, Norman, OK 73019 USA
[2] Univ Iowa, Dept Mech Engn, Iowa City, IA 52242 USA
[3] Struct Dynam Res Corp, Milford, OH 45150 USA
[4] Univ Iowa, Coll Engn, Ctr Comp Aided Design, Iowa City, IA 52242 USA
来源
CONCURRENT ENGINEERING-RESEARCH AND APPLICATIONS | 1998年 / 6卷 / 02期
关键词
simulation-based design; concurrent engineering; product model; modeling and simulation; computer-aided engineering;
D O I
10.1177/1063293X9800600204
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper presents a multilevel product model that supports Simulation-Based Design (SBD) of mechanical systems, from preliminary to detailed design stages. The primary goal of the SBD is to achieve product designs featuring better performance and greater durability and reliability through computer-based modeling. engineering analysis, and design trade-off. A Computer-Aided Design (CAD) model combined with engineering parameters and mathematical equations that simulate physical behavior of the mechanical system constitute its product model for SBD. For preliminary design, improvement of system performance. including dynamics and human factors, is usually the primary feats. A CAD model with reasonably accurate physical parameters, such as mass properties of major components or assemblies, is defined as the base definition of the product model for SBD. A number of simulation models are derived from the base definition to support simulation of the mechanical system performance. A parametric study can be conducted to search for design alternatives using dimension parameters created in the parameterized CAD model. The CAD model and base definition are then refined from the preliminary design stage to support intermediate designs. Intermediate designs will primarily focus on product subsystem performance. A product model is evolved by refining geometric representation of mechanical components in CAD, and expanding product assembly into parts and subassemblies for further engineering analysis. Component designs for performance, such as fatigue, mechanical reliability, and structural performance, as well as maintainability are the primary focus in the detailed design stage. A detailed product model evolved from that of the previous design is needed. in the detailed design stage. a systematic design trade-off method supports design improvement. A High Mobility Multi-Purpose Wheeled Vehicle (HMMWV) is employed to illustrate and demonstrate the proposed product model.
引用
收藏
页码:131 / 144
页数:14
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