CAJ | 학술논문

为了研究功能梯度热障涂层（TBC）热应力问题，改进了交错格点型有限体积方法（SCV-FVM）。运用交错网格技术，待解变量定义在单元节点上，物性参数定义在单元中心上。计算功能梯度圆盘的应力场，结果与理论解吻合良好，验证方法的正确性。通过与有限元结果及高阶功能梯度理论（ HOTFGM）结果对比发现，SCV-FVM可以有效避免物性参数变化引起的人工数值不连续。研究功能梯度TBC热应力问题，分析涂层厚度变化对热应力场的影响，通过与ANSYS计算结果对比验证数值模拟的正确性。
위료연구공능제도열장도층（TBC）열응력문제，개진료교착격점형유한체적방법（SCV-FVM）。운용교착망격기술，대해변량정의재단원절점상，물성삼수정의재단원중심상。계산공능제도원반적응력장，결과여이론해문합량호，험증방법적정학성。통과여유한원결과급고계공능제도이론（ HOTFGM）결과대비발현，SCV-FVM가이유효피면물성삼수변화인기적인공수치불련속。연구공능제도TBC열응력문제，분석도층후도변화대열응력장적영향，통과여ANSYS계산결과대비험증수치모의적정학성。
In order to analyze the thermoelastic performance of a thermal barrier coating with a functionally graded material ( FGM) layer, the staggered grid finite volume method ( SCV-FVM) has been developed. The staggered grid technique was adopted by defining variables at the vertex and material properties at the cell center. SCV-FVM was applied to predict the stress of an FGM disk. The results agree well with the theoretical solution which validates its accuracy. The comparisons between the results from SCV-FVM, the conventional finite element method and the higher order theory functionally graded method ( HOTFGM) show that SCV-FVM can avoid the stress discontinuity caused by the change in the matter parameters. The thermoelastic performance of functionally graded TBC was in-vestigated. The obtained results are consistent with the ANSYS results which validates the simulations. The effects of the thickness have been discussed.