# Homework Help: How can I know which enters yield bar first?

1. Apr 19, 2015

### Queren Suriano

1. The problem statement, all variables and given/known data

2. Relevant equations

Yield stress = 250 MPa

3. The attempt at a solution

Delta= PL/(AE) if in both bars the A and E are the same, and from the equilibrium I get Q= 4.125 F(AD) + F(BE) , also from the compatibility I get delta AD = 4.125 delta BE

Last edited: Apr 19, 2015
2. Apr 19, 2015

### SteamKing

Staff Emeritus
Que?

3. Apr 19, 2015

### Queren Suriano

How can I know which bar (AD or BE) reach the yield first??

4. Apr 19, 2015

### Queren Suriano

Or how can I know which bar will reach a perfectly plastic behavior first?

5. Apr 19, 2015

### Queren Suriano

Delta= PL/(AE) if in both bars the A and E are the same, and from the equilibrium I get Q= 4.125 F(AD) + F(BE) , also from the compatibility I get delta AD = 4.125 delta BE

6. Apr 19, 2015

### Staff: Mentor

@Queren Suriano, you didn't include a statement of the problem, so we have no idea what you're trying to do or what the symbols mean. AD looks like it would be a line segement, but what is Area AD? And what is E(AD)? What is a yield bar? You have not provided enough information for us to be able to help you.

Last edited: Apr 20, 2015