已知一点处的应力状态如图所示,单位为MPa,其主应力为() [img=160x130]17e0b213a8be3d0.jpg[/img]
A: σ1=50MPa,σ2=0,σ3=-40MPa
B: σ1=50MPa,σ2=40MPa,σ3=0
C: σ1=40MPa,σ2=0,σ3=-40MPa
D: σ1=50MPa,σ2=40MPa,σ3=-40MPa
A: σ1=50MPa,σ2=0,σ3=-40MPa
B: σ1=50MPa,σ2=40MPa,σ3=0
C: σ1=40MPa,σ2=0,σ3=-40MPa
D: σ1=50MPa,σ2=40MPa,σ3=-40MPa
举一反三
- 已知一点处的应力状态如图所示,单位为MPa,其主应力为() A: =50MPa,=0,=-40MPa B: =50MPa,=40MPa,=0 C: =40MPa,=0,=-40MPa D: =50MPa,=40MPa,=-40MPa
- The average stress σm and stress amplitude σa of the alternating stress in the figure are respectively ( ).[img=239x154]17de8405f43ce66.jpg[/img] A: σm = 40MPa,σa = -120 MPa B: σm = -40MPa,σa = -40 MPa C: σm = 0MPa,σa = 120 MPa D: σm = -40MPa,σa = 80 MPa
- 已知一点处的应力状态如图所示,单位为MPa,其主应力为()[img=144x116]17e0ad407a26f79.jpg[/img] 未知类型:{'options': ['17e0a6f8e9614ed.png=50MPa,[img=19x21]17e0ad408d2e2ef.png[/img]=0,[img=19x21]17e0a6f8f26d37e.png[/img]=-40MPa', ' [img=17x21]17e0a6f8e9614ed.png[/img]=50MPa,[img=19x21]17e0ad408d2e2ef.png[/img]= 40MPa,[img=19x21]17e0a6f8f26d37e.png[/img]=0', ' [img=17x21]17e0a6f8e9614ed.png[/img]=40MPa,[img=19x21]17e0ad408d2e2ef.png[/img]= 0,[img=19x21]17e0a6f8f26d37e.png[/img]=-40MPa', ' [img=17x21]17e0a6f8e9614ed.png[/img]=50MPa,[img=19x21]17e0ad408d2e2ef.png[/img]= 40MPa,[img=19x21]17e0a6f8f26d37e.png[/img]=-40MPa'], 'type': 102}
- 已知一点应力状态如图,三个主应力为σ1=MPa,σ2=MPaσ3=MPa.[img=247x138]17e44652f6a3eca.png[/img]
- 图示应力状态下 ,其3个主应力σ1=40MPa,σ2=40MPa,σ3=0, τmax=0。[img=201x165]1803be4c089f05b.png[/img]