acoustics进行盛水容器湿模态仿真出现错误

各位老师，我在使用workbench15.0的ACT插件的 acoustics进行盛水容器的湿模态仿真时，出现求解错误，错误内容为Water Liquid contains invalid property data. These problems are: Elasticity is required, but is currently undefined. These problems must be corrected before you can continue. Please switch to Engineering Data and correct the invalid property data. 求教各位老师，谢谢。