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.

我们成功测试了可用的脆性开裂模型，混凝土损伤塑性模型（CDP），以使用演示数据确认钙化模型的断裂行为。当应变值达到拉伸应变的破坏标准时，钙化模型的元素被移除。它提供了模拟脆性开裂行为的能力。我们加工了一种较佳的圆柱形模拟材料，其力学性能接近真实的钙化物，并进行实验测试以获得压缩应力-应变数据。峰值应力与在数值模拟中测试的CDP模型的最新研究成果将在7月的国际会议EMBC2023上公布。