Research of the Bus Frame Analysis and Optimization Based on NX
|School||Dalian University of Technology|
|Keywords||Bus NX Secondary development Knowledge Engineering Optimization|
The body design occupies a pivotal position in the passenger vehicle design , as technology continues to progress and raising the level of people 's material life , also tends to be diverse and complex customer demand for passenger car types and styles . In traditional serial design approach , the design efficiency is low , cumbersome manual operation , and it is difficult to reach the requirements and objectives of the modern body structure design . How to avoid the complicated manual operation to shorten the product development cycle , and has become an urgent problem . NX is the design, analysis , simulation and manufacturing software in one system , with secondary development of required application programming interface and interface development tools . Bus Body Design Optimization NX applications have yet to see that this topic is aimed to improve the Bus Body optimize automation and intelligent design , optimization of passenger cars in the NX platform launched a related study . This article is based on the NX secondary development platform , achieved by means of the knowledge fusion technology and parameters , analysis -driven optimization bus body design . The program is based on the NX secondary development tools as a link, and seamless integration with knowledge fusion technology , CAD software and NX NASTRAN solver . Mainly to carry out the following work : constraint relations between the beams in order to reflect the correlation between the beams of the bus body , with the relevant parameters to set the relevant parameters and pay attention to point . Discussion of the relevant parameters of the unique processing cycle affect multiple beam associated parameters ; application secondary development tools to build a bus body skeleton model parameterization , to ensure the synchronization update the adjustment beam ; knowledge fusion technology provides symmetric beam and distributed beam constraint relations ; process by analyzing the NX Advanced Simulation , developed an automated process optimization framework ; optimized passenger local weld spacing obtained a better weld spacing . Secondary development of technology based on the NX platform have very far-reaching significance in the bus body design . This technology can reduce repetitive manual operations in the traditional body design , and contribute to the achievement of collaborative design , engineers can put more energy into the design itself , and to improve the design quality and design efficiency and shorten the development cycle of the body .