Elasticdeformation occurs at stress below the yield stress, the viscous flow appears after yield with thixotropy.
验证了在剪切应力低于屈服应力时，变形基本上是弹性的，而屈服后粘流过程显示了触变特性。
2
Compared with both of them, the peak-value strength, elastic modulus, and deformation modulus of sandstone after high temperature increase by a little and they are all brittle fractures.
两者相比，高温后砂岩的峰值强度、弹性模量和变形模量有所提高，两者受温度影响均以脆性破坏为主。
3
There exists the elasticdeformation during the process of sheet bending, and it will influence the springback of sheet after unloading.