U.S.-Korea Cooperative Research: A New Method to Obtain Highly Accurate Three Dimensional Analysis of Crack Propagation and Stress on Composite Materials

Oh 9722699该奖项支持北卡罗来纳大学夏洛特分校的吴海秀博士和韩国忠北国立大学的Jae Heon Yun博士之间为期两年的合作研究项目，该项目的主题是“获得复合材料裂纹扩展和应力的高精度三维分析的新方法”。该项目的目标是开发一种新的裂纹扩展数值模拟方法，该方法处理三维顶点、边和边-顶点的奇异性。与骨折有关的损伤、金属疲劳和材料失效在我国民用基础设施方面是至关重要的问题。有效的检查和预防性维护计划(例如，飞机的适航性或核电站的完整性)需要准确的断裂分析。然而，由于断裂力学的复杂几何和非线性特征，分析技术的使用非常有限。该项目将结合美国和韩国实验室的经验，致力于为三维断裂分析提供实用和准确的数值模拟。***

Oh 9722699 This award supports a two-year collaborative research project between Dr. Hae-Soo Oh of the University of North Carolina at Charlotte and Dr. Jae Heon Yun of Chungbuk National University in Korea on a "New Method To Obtain Highly Accurate Three Dimensional Analysis of Crack Propagation and Stress on Composite Materials." The goal of the project is to develop a new method for numerical simulation of crack propagation which deals with the three- dimensional singularities of vertex, edge and edge-vertex. Fracture-related damage, metal fatigue and material failure are critically important issues in the context of our national civil infrastructure. Effective inspection and preventive maintenance programs (for example, of the airworthiness of airplanes or the integrity of nuclear power plants) require an accurate fracture analysis. However, because of the complicated geometry and nonlinearities that characterize fracture mechanics, the use of analytical techniques is very limited. This project will combine the experience of the U.S. and Korean laboratories to work on a practical and accurate numerical simulation for three dimensional fracture analysis. ***