摘要
对客车车窗玻璃的大开口变形分析,传统的对角线长度变化评价法和变形翘曲度评价法都属于一种整体评价法,没有考虑玻璃材料的力学性能,无法准确预测开口变形是否会造成玻璃窗的破坏,破坏的具体部位在何处。本文提出一种利用已有有限元模型,基于强度理论的连续介质开口变形的计算方法。通过观察第一主应力或第一主应变云图,即可对车窗玻璃开口变形的安全性做出定量判断,并根据云图分布情况对危险部位提出合理的改进措施。
For big openings deformation of bus window glass, the traditional diagonal length change evaluation method and the warping deformation evaluation method are overall evaluation method, without considering the mechanical properties of materials such as glass. It can＇t exactly predict whether the openings deformation will make glass destruction, and where failure of the specific parts is. Based on the strength theory and existing FEA model, a new openings deformation calculation method is proposed. Through the observation of the first principal stress or first principal strain cloud pictures, quantitative judgment of the safety for the bus window glass openings deformation can be made. According to the distribution of the cloud, an improvement measure is put forward for dangerous parts .
出处
《农业装备与车辆工程》
2012年第3期19-22,共4页
Agricultural Equipment & Vehicle Engineering
基金
山东省自然科学基金资助项目(ZR2010EL003)
山东省博士后创新项目(20090102)
关键词
客车
有限元
开口变形
强度理论
bus
FEA
openings deformation
strength theory
