# Finite Element Analysis / Structural Analysis

• Engineering

## Homework Statement:

Finite Elements Analysis / Structural Analysis

## Relevant Equations:

NO
Hello engineer's community !!

I got a problem. If i got a truss frame with 2 bars and an initial nodal displacement for the common node , then how can i calculate the velocity of the oscilation as function of time ? (the 2 bars have different length , same elasticity modulus , same density and different angle with the horizontal line and they are connected to a common node as i said )

I would be glad if you help me ! 1) Supports are fixed , the bars can only rotate .

2)I dont have numerical values of the data , i try to solve it using variables and create a general formula

3)Yes , the connecting joint has an initial displacement . I dont have any other data about magnitude or direction , i only know that i have displaced the connecting joint and later i let it move freely ( from zero velocity) and an oscillation takes place ( on x , y axis) due to elasticity .

4)If "U" is the horizontal velocity and "V" the vertical velocity of the connecting joint then i want to find how these 2 velocities change during the oscillation/time . I want to find the formulas for U(t),V(t) (t=time) . But yes oscillation frequency is needed for these equations .

5)I consider only axial deformation , and the maximun degrees of freedom for each node should be 2 ( moving vertically , moving horizontally)