How Does a Thin Plate with a Central Hole React Under Stress?

AI Thread Summary
A thin plate with a central hole made of elastic and perfectly plastic material requires analysis to determine stress responses under applied loads. The initial yielding stress can be calculated using the material's properties, including Young's modulus and yield strength. To find the maximum stress before full plastic collapse, one must consider the von Mises stress distribution and deformation patterns. Reference materials on stress concentrations in infinite plates are essential for solving this problem effectively. Utilizing a solid mechanics textbook will provide the necessary guidance for approaching the calculations.
peer
Messages
4
Reaction score
0
hiiii its me peer...i need some help to solve dis problem.
A thin plate containing a central hole is made of an elastic and perfectly plastic material with youngs modulus E=200GN/M,Poissons ratio v= 0.3 and yield strength infinity=100MPA, D=0.4M,L=2M,W=1.2M.THE THICKNESS OF PLATE IS 0.01

A. find the applied remote stress (infinity) that leads to the initial yielding of any where in the plate.show the distribution of von mises and deformation of the plate at this applied stress.
B.find the maximum possible stress (infinity) that the plate can carry before full plastic collapse.show the distribution of von mises stress and deformation of the plate immediately before this applied stress is reached.
 
Engineering news on Phys.org
Please show how you've tried to work the problem so far. Do you have reference material (e.g., a textbook) handy that discusses stress concentrations in infinite plates?
 
i have a textbook with me that deals with stress analysis and deformation...but nothng related or dealing with the problem above...i have nt yet started...totally blind...dont know how to start with...please help me in dis problem...please...thanks a lot for ur previous reply...waiting for d same and kind reply...thanks a lot
 
You're going to need a textbook or handbook that describes the stress field around the circular hole. This is a pretty common problem; many solid mechanics / elasticity texts should cover it.
 

Thread '2:1 Pulley Question'

I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
View full post »

Thread 'Why do all my clocks run slow?'

Hi. I noticed that all electronic devices in my household that also tell time eventually lag behind, except the ones that get synchronized by radio signal or internet. Most of them are battery-powered, except my alarm clock (which runs slow as well). Why does none of them run too fast? Deliberate design (why)? Wrong temperature for quartz crystal? Decreasing battery voltage? Or just a coincidence?
View full post »

Similar threads

How Does Internal Pressure Affect Yielding in Steel Tubes?
Replies
15
Views
2K
Reaction Forces of a simply supported thin plate
Replies
1
Views
6K

Hot Threads

Recent Insights

Back
Top