Geometry modeling of ship hull based on non-uniform B-spline

In order to generate the three-dimensional (3-D) hull surface accurately and smoothly, a mixed method which is made up of non-uniform B-spline together with an iterative procedure was developed. By using the iterative method the data points on each section curve are calculated and the generalized waterlines and transverse section curves are determined. Then using the non-uniform B-spline expression, the control vertex net of the hull is calculated based on the generalized waterlines and section curves. A ship with tunnel stern was taken as test case. The numerical results prove that the proposed approach for geometry modeling of 3-D ship hull surface is accurate and effective.     

大型邮轮分段总段称重工艺设计

为了确保大型邮轮重量控制,具体分析邮轮称重对象,确定分段总段称重方法,提出对称重系统的工艺要求,制定分段总段称重工艺,对大跨度薄板结构进行称重有限元计算,确定合理的称重工艺方案。     

新能源汽车电子控制技术研究分析

新能源汽车的出现,对改善环境污染、缓解能源紧张局势具有重要意义。近年来,新能源汽车不断创新发展,对电子控制技术的应用越来越普及,有利于保障汽车控制的灵活性和有效性。结合当前新能源汽车的发展情况、电子控制技术对汽车行业发展的影响等,综合分析各项技术的应用情况,旨在为新能源汽车向前发展提供借鉴和参考。     

龙溪口航电枢纽现浇钢筋混凝土排架结构应用

针对钢筋混凝土排架结构与附属设备安装联合施工时出现的精度控制差、质量难以保障的问题，依托龙溪口航电枢纽工程泄洪闸启闭机房钢筋混凝土排架结构工程，进行了钢筋混凝土排架结构施工工艺标准化和施工质量控制要点的研究。通过优化施工组织、施工工艺，提出工期、质量优化措施，明确排架结构施工过程中支架搭设和模板组装为主要控制要点，为同类航电枢纽工程中的排架结构应用提供参考。