已知材料上某一点应力分量为 [img=133x63]18038ad81d9e7c1.png[/img]MPa时,则该点的主应力是______
A: -500MPA,-200MPA,-100MPa
B: 500MPA,200MPA,100MPa
C: 500MPA,200MPA,-100MPa
D: 500MPA,-200MPA,100MPa
A: -500MPA,-200MPA,-100MPa
B: 500MPA,200MPA,100MPa
C: 500MPA,200MPA,-100MPa
D: 500MPA,-200MPA,100MPa
举一反三
- 单元体上三个主应力的大小分别为100MPa,0,-100MPa,则单元体最大切应力数值应为 A: 100 MPa B: 0 MPa C: 50 MPa D: 70MPa
- 图示单元体中[img=26x14]17e43a9932d40f3.jpg[/img]为。[img=208x186]17e43a993c8dd58.png[/img] A: 50 MPa B: 200 MPa C: 100 MPa D: 0 MPa
- 某点应力状态所对应的应力圆如下图所示。C点为圆心,应力圆上点A所对应的正应力σ和剪应力τ分别为 ( ) 。[img=630x509]1803be4a7cdc17c.png[/img] A: σ=0,τ=200 MPa B: σ=0,τ=150 MPa C: σ=50 MPa,τ=200 MPa D: σ=50 MPa,τ=150 MPa
- 某点应力状态所对应的应力圆如下图所示。C点为圆心,应力圆上点A所对应的正应力σ和剪应力τ分别为 。[img=1313x740]17de93bacdcd6dd.jpg[/img] A: (A)σ=0,τ=200 MPa; B: (B)σ=0,τ=150 MPa; C: (C)σ=50 MPa,τ=200 MPa; D: (D)σ=50 MPa,τ=150 MPa。
- 已知一点的应力状态如图所示,则该点的最大切应力τmax为() [img=184x138]17e0b213b4fd1e1.jpg[/img] A: 25MPa B: 50 MPa C: 75 MPa D: 100 MPa