摘要：为了满足某电动客车轻量化的需求,在保证车身骨架在模拟车辆行驶的4种极限工况(水平弯曲、极限扭转、紧急转弯和紧急制动)结构性能良好后,用灵敏度分析找出能有效减轻底盘骨架质量而对骨架结构性能影响不大的部件.以型材厚度作为优化设计变量值,骨架总质量最小为目标,各工况下的最大位移为约束条件,对车身骨架建立多目标优化数学模型.利用响应面算法(RSM)得到优化后各设计变量的厚度值.对轻量化前后的车身骨架在相同条件下进行了模态和结构性能对比分析.结果表明:优化后4种极限工况下的车身骨架强度与刚度均能得到保证,模态频率也在要求范围内,且车身骨架总质量减轻45.6 kg,约占其总质量的5.36%,轻量化效果较好.

摘要：基于某一款汽车,在满足悬架相关性能合理的前提下,利用试验设计方法中的近似D-最优设计确定试验因素及其变化范围。结合"416-C"之设计X表绘制因素水平编码表,采用二次回归方程求出了最优的前后悬架刚度和阻尼。在MATLAB软件中构造ADAMS中可用的三维A等级路面,在相同条件下对优化前后整车进行仿真分析。结果表明:优化后的悬架性能满足要求,驾驶员座椅处的3个方向加速度(垂向、纵向、横向)以及加权加速度均方根值均有下降,整车平顺性得到进一步提高。

摘要：数字化设计与制造技术的学科体系具有多学科交叉的属性,其课程具有知识面广且更新速度快的特点,课堂教学模式和方法存在教师为中心、知识碎片化、偏重理论化、与前沿脱节的问题,难以培养社会急需的创新人才。为解决这些问题,教学团队开发产学研用融合式《数字化设计与制造》校企合作课程教学模式,实施教师与学生并重、模块与系统并重、理论与实践并重、经典与前沿并重的教学方法,并结合与企业开展的科技攻关项目开展实践教学,提升学生的实践技能与塑造学生的创新能力,培养可应对新科技革命挑战下的机械工程人才。The discipline system of digital design and manufacturing technology has the attribute of interdisciplinary, and its curriculum has the characteristics of wide range of knowledge and fast update speed. The classroom teaching mode and method have the problems of teacher-centered, knowledge fragmentation, emphasis on theory, and disconnection from the frontier, which makes it difficult to cultivate innovative talents urgently needed by society. To address these issues, the teaching team developed an industry-academia-research-application integrated teaching model for the “Digital Design and Manufacturing” school-enterprise cooperation course. This model emphasizes teachers and students equally, balances modules and systems, integrates theory with practice, and combines classics with cutting-edge methods. It incorporates practical teaching through technological research projects in collaboration with enterprises to enhance students’ practical skills, shape their innovative abilities, and cultivate mechanical engineering talents capable of meeting the challenges of the new technological revolution.