Analysis of a statically indeterminate 2D truss (Method 1)

Aims and expectations at this course

Our expectation after you study:

1- Getting used to 2D based problems

2- Modeling the elements crossing each other while they do not connect

3- Comprehending the modules selection order

4- Defining displacement in a node

5- Applying concentrated force on a node

6- Defining temperature changes and thermal stresses in the elements

7- Producing pre-load in a member as a result of manufacturing error

* Restricted Content

Consider the truss shown in the Figure including 9 members, which can rotate freely at the joints. The whole system is constrained at two points of A and D and a roller support of B. The members CE and BF as well as AE and BD do not intersect each other, so, there is no joint in the middle of these members. Because of manufacturing error, CF is 0.1 in shorter than the length of 100 in (99.9 in). Accordingly, there might be a pre-load in this member as well as the others related to this one. In addition, a concentrated force of 10000 lb, symbolized by P, is applied on the point F. The point of B has been pulled down 0.05 in and kept ny the support. The entire system is, also, heated in order to increase the temperature 50 oF. It causes thermal stresses in all members. This Tutorial leads you through the Abaqus\CAE modeling process to look for the stress in CF member and reaction force in the point B. More is, the results will be compared with the reference [1]. All lengths are in inch and all members cross-sectional areas are 3.33333 in2. The members are made from steel with the modulus of elasticity of 30×106 psi and thermal expansion coefficient of .

Access for this article is restricted

Be the First to Comment!