Determination of structural properties of cold roll formed dimpled steel sections and analysing galling in the forming process

内容提要：酒窝钢型材是哈德利集团生产的冷轧成型型材。对这些压痕截面进行了分析，据报道，与预压痕的素钢截面相比，它们可以承受更多的载荷。将对其性能进行进一步的研究，并进行试验和有限元分析，以获得确定结构性能的设计表达式。还将对冷弯成型过程中的接触压力和摩擦力进行分析，以消除毛刺。合作伙伴的角色：该项目要求对结构进行弯曲和拉伸测试。材料试验机由哈德利集团提供，测试样品由哈德利集团提供。学校和大学都有Ansys软件和HPC设施。学生将参观哈德利集团，了解冷弯成型和压痕制造工艺。该学员将在该公司接受使用专业冷轧板材成形模拟软件的培训。学生还将接受使用Ansys软件进行压痕模拟的培训，并由大学的导师进行实验测试。目的分析和确定冷弯成型工艺生产的韧窝钢型材的组织性能，消除成形过程中的刀具刮伤磨损。推导确定凹陷型钢结构性能的表达式(WPS 1-3)2.推导确定凹陷型钢连接的转动刚度和线刚度的表达式(WPS 4-6)3.分析冷弯成型过程中的模具设计并消除刮痕(WPS 7-9)

Summary: Dimpled steel sections are cold roll formed by the Hadley group. These dimpled sections have been analysed and it is reported that they can carry more load comparing to the pre-dimpled plain steel sections. Further research on the properties of dimpled steel sections will be conducted; experimental test and finite element analysis will be carried out to obtain design expressions for determining structural properties. Analysis of contact pressure and friction force in the cold roll forming process will also be conducted to eliminate galling.Partners' roles: The project requires bending and tensile test of structures. Material testing machines are available at Hadley group and test samples will be provided by Hadley group. ANSYS software and HPC facilities are available in the School and the UniversityThe student will visit the Hadley group to understand cold roll forming and dimpling manufacturing process. The student will be trained to use specialist cold roll sheet metal forming simulation software at the company. The student will also be trained on dimpling simulation using ANSYS software and conducting experimental test by the supervisor at the University. Aims To analyse and determine structural properties of dimpled steel sections manufactured by a cold roll forming process and eliminate tool galling wear in the forming process.Objectives1. Derive expressions for determining structural properties of dimpled steel sections (WPs 1 - 3)2. Derive expressions for determining rotational and linear stiffness of connections of dimpled steel sections (WPs 4 -6 )3. Analyse tool designs in the cold roll forming process and eliminate galling (WPs 7 - 9)