Computational investigation on the efficacy and safety of the lesion preparation devices in calcified coronary artery with a cracking model of calcification

钙化冠状动脉病变预备装置的有效性和安全性的计算研究

• 批准号: 22K12774
• 负责人: 朱 暁冬
• 金额: $ 2.66万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22K12774/
• 关键词: CDP model; fracture behavior; EMBC; compression test; calcification; finite element analysis; numerical cracking model; cutting/scoring balloon

We successfully tested an available brittle cracking model, concrete damaged plasticity model (CDP), to confirm the fracture behavior of the calcification model using a demo data. The elements of the calcification model were removed when the value of strain reached the failure criteria of tensile strain. It provided a capability for modeling brittle cracking behavior.We processed a preferable cylindrical analogue material which mechanical property is close to the real calcification and performed experimental tests to obtain the compression stress-strain data.The peak stress is in good agreement with the value of the calcification.Recent research outcome of the CDP model tested in the numerical simulation will be presented in an international conference EMBC2023 in July.

我们成功地测试了现有的脆性开裂模型——混凝土损伤塑性模型（CDP），并使用演示数据验证了钙化模型的断裂行为。当应变值达到拉伸应变破坏准则时，去除钙化模型的元素。它提供了模拟脆性开裂行为的能力。我们加工了一种力学性能接近真实钙化的较好的圆柱形模拟材料，并进行了实验测试，获得了压缩应力-应变数据。峰值应力与钙化值吻合较好。在数值模拟中测试的CDP模型的最新研究成果将在7月份的EMBC2023国际会议上发表。