The accident types and causes in cold formed steel structure are discussed and analyzed carefully by examples.
冷弯薄壁型钢结构有其自身的受力特点 ,如果设计、施工时对此不重视极易发生事故。
Reliability analysis of 550MPa high-strength cold-formed thin-walled steel structures;
屈服强度550MPa高强冷弯薄壁型钢结构轴心受压构件可靠度分析
The cold bending property is one of the important targets for the hot rolled strip,the cold bending test is required inspection item stipulated in the standards.
冷弯性能是热轧中薄板带材的重要指标之一,冷弯试验是标准规定的必检项目,但在实际生产中经常出现冷弯不合格现象。
The cold-bended crack in the hot rolled plate Q345 can be eliminated by adoption of heating-cold bending process as well as improvement of the c.
利用金相显微镜、X射线衍射仪及电子探针等对Q345热轧钢板因冷弯产生的裂纹进行了系统检验分析。
The wire-embedded aluminium pipes have cracked during the cold bending.
内嵌铝管在冷弯过程中发生开裂。
Special buckling modes of cold-formed thin-walled flexural members;
冷弯薄壁型钢受弯构件特有的失稳模式
Interaction of local buckling in cold-formed members and effective width of edge-stiffened elements;
冷弯型钢局部屈曲的相关性和卷边板件的有效宽度
The phenomenon that BM510L beam steel plate was crazed in cold bending.
针对BM510L汽车大梁钢板冷弯开裂现象,对纵向和横向试样分别用金相显微镜观察抛光态夹杂物及金相组织,发现断口处夹杂物及带状组织较严重。
In accordance with the requirement of technical parameter of super high pressure bend and cold bend specification, the stress at cold bending on the three-roll bend machine was analyzed.
根据超高压弯管技术参数和冷弯工艺的要求,结合超高压管在立式三辊滚弯机上冷弯时的受力状 态,运用弹塑性理论分析计算出弯管所用弯矩及弯管的最大压紧力,并据此选用弯管设备,解决了超高压弯管的制 造问题。
Some methods of reducing the nonmetallic inclusion and inclusion modification to reduce cracking sensibility during cold bending are proposed.
分析了中厚板试样裂纹处的表层和芯部的夹杂物种类、形状、尺寸、分布以及表层、1/ 4处、芯部的组织 ,确定钢板中的硅酸盐夹杂偏多是冷弯试样出现裂纹的主要原因 ,并指出减少钢液中的非金属夹杂物以及改变夹杂物分布形态是改善试样冷弯性能的有效措
Effects of anisotropic yield criteria on the spring-back s FEM simulating of stainless stell sheet s cold-roll forming process;
各向异性屈服准则对不锈钢板冷弯成型回弹模拟的影响
Inorder to reduce periodicity of cold-roll forming processs and improve the quality of products and me- chanical property the explicit dynamic finite element method with the software of ANSYS/LS-DYNA to simulate the cold-roll forming processs of channel stell,is studied including deforme,stresses and stains in the forming process.
采用ANSYS里的LS -DYNA模块对槽钢辊式加工工艺进行显示动力学有限元法模拟,分析成型中轧件的变型特点及应力应变分布,为冷弯成型CAD\CAE技术提供有力的实验数据和理论支持,最终应用于实际生产。
The basic principles and arithmetic of FEM numerical simulation of cold roll forming process are reviewed in this paper,the large structural analysis program ANSYS/LS-DYNA is used to simulate cold-roll forming progress,analyze the simulating results,and gain the theory and technology which are useful to directing real manufacturing.
概述了冷弯成型过程有限元数值模拟的基本原理和基本算法,利用ANSYS/LS-DYNA分析软件对冷弯过程进行有限元数值模拟,并对模拟结果进行受力和应变分析以验证其可行性和正确性,为冷弯成型的工程设计提供了科学依据,从而降低设计风险。