ansys workbench 进行热-力耦合分析，出现：The calculated specific heat at constant strain (Cv) is negative.

如题，使用ansys workbench 22R1-23R1版本的耦合稳态进行分析热应力，先进行稳态热-稳态力顺序耦合分析没出现问题，使用稳态耦合分析出现：The calculated specific heat at constant strain (Cv) is negative. (See section "Thermoelasticity" of the Theory Reference for the definition  of Cv.) Please verify the input of thermal material quantities for consistency.  反复检查工程数据找不到恒定热容的输入选项如图1，打开workbench材料部分里的参数由恒定热容数字均为真如图2，图3是仿真流，目前一直找不到解决的办法