工程设计学报2018，Vol.25Issue(3)：295-301,7.DOI:10.3785/j.issn.1006-754X.2018.03.007
基于拓扑优化的重型矿用自卸车翻车保护结构设计
Design of roll-over protective structure for heavy mining dumper based on topology optimization
摘要
Abstract
The roll-over protective structure (ROPS) is a set of passive protective device installed on the cab of the engineering vehicle,w hich can provide effective protection for the driver in the roll-over accident .To solve contradictions between carrying capacity,rigidity,light weight and lateral endergonic effects of ROPS,topological optimization technology based on variable-density method has been introduced to ROPS design of heavy mining dumper,which can solve the prob-lem of ROPS about optimal distribution of materials in a given design area and improve its lateral endergonic effect and vertical and parallel rigidity and reduce self weight .Firstly,the OptiStruct structure optimization module was used to make topology optimization design of ROPS .The opti-mization objective was to minimize the strain energy in multiple working conditions .Loads and constraints were applied according to the international standards .According to the topology opti-mization results,the detailed design was carried out .Afterwards,the dynamic analysis software LS-DYNA was used to make dynamic loading analysis for ROPS final design model .Finally,per-formance contrastive analysis between optimized ROPS and original ROPS was made .Results showed that the topology optimized ROPS did not invade DLV (deflection-limiting volume) under the three working conditions and met the international standards of carrying capacity require-ments .The maximum energy absorption in lateral loading reached 175 kJ,which met the require-ments of the international standards for the absorption of lateral energy .Compared with the origi-nal ROPS,the topology optimized ROPS reduced the load required for the lateral energy absorp-tion from 1 324.5 kN to 1 231 kN .The vertical displacement of the loading center was reduced by 21.3% and the longitudinal displacement was reduced by 34.4% .Its quality was decreased by 24.1% .T he research results provide a new method for the design of ROPS of heavy mining dumper, and the researching achievement has certain significance for the follow-up design and improvement of ROPS .关键词
翻车保护结构/有限元法/拓扑优化/安全性能Key words
roll-over protective structure (ROPS)/finite element method/topology optimization/safety performance分类
交通工程引用本文复制引用
唐华平,曾理,王胜泽,陈昊森..基于拓扑优化的重型矿用自卸车翻车保护结构设计[J].工程设计学报,2018,25(3):295-301,7.基金项目
国家高技术研究发展计划(863计划)项目(SS2012AA041809) （863计划）
湖南省科技重大专项计划项目(2010FJ1003-2) （2010FJ1003-2）
