超大面积头盖骨缺损补片冲压成形的数值模拟  

Numerical simulation of stamping process of super large area cranial prosthesis

作　　者：裴永生[1] 孙士杰 王立聪 孟宁 王春光 PEI Yong-sheng;SUN Shi-jie;WANG Li-cong;MENG Ning;WANG Chun-guang(College of Vehicles and Energy, Yanshan University, Qinhuangdao 066004, China;Wisdplat Automotive Technology Co. , Ltd. , Shanghai 201204, China;Machining Department, Qinhuangdao Technician College, Qinhuangdao 066004, China)

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004 [2]慧勒汽车科技(上海)股份有限公司,上海201204 [3]秦皇岛技师学院机械加工系,河北秦皇岛066004

出　　处：《塑性工程学报》2018年第2期52-56,共5页Journal of Plasticity Engineering

基　　金：河北省自然科学基金资助项目(E2015203002);秦皇岛市科学技术研究与发展计划项目(201701B039)

摘　　要：以典型的超大面积头盖骨缺损患者的补片成形过程为研究对象，采用商用有限元软件，建立数值模拟模型，对钛合金头盖骨补片的成形过程进行有限元仿真，预测可能出现的网丝拉裂和起皱缺陷，分析不同冲压参数时成形缺陷的产生原因，并确定了能够获得良好结果的冲压参数。结果表明，采用夹持钢板工艺实现压边，以及在凸凹模具与夹持钢板之间、夹持钢板与钛网板之间涂抹润滑油后，可以有效控制起皱和拉裂缺陷的发生，得到合格的钛合金头盖骨补片，保证头盖骨补片数字化制造的成形质量。实验结果证明，数值模拟结果和实际吻合良好，为头盖骨补片的冲压成形工艺提供了理论基础。Taking the typical super large area cranial prosthesis of patients with crania defect as the research object, the numerical simu- lation model was established by using commercial finite element software, the forming process of titanium cranial prosthesis was simulated, the possible mesh cracking and wrinkling defect were predicted, the cause of forming defects with different stamping parameters was ana- lyzed, and the stamping parameters resulting in good simulation result were obtained. The results show that the wrinkling and cracking de- fects can be effectively controlled and qualified cranial prosthesis is obtained, and the forming quality of the digital manufacturing of crani- al prosthesis is garanteed by blank pressing through clamping plate technology and lubricating oil between punch and die and clamping steel plate and between clamping plate and titanium mesh sheet. The experimental results show that the numerical simulation results are in good agreement with the experiment results, which provides theoretical basis for the forming process of cranial prosthesis.

关 键 词：冲压成形 钛合金头盖骨补片 超大面积 数值模拟 夹持工艺 

分 类 号：TG306[金属学及工艺—金属压力加工]