1) At first , you have to create the model by defining the properties and geometry of the model.

2)Then mesh the model and apply the appropriate boundary conditions to simulate the loading and constraints in your analysis.

3)After this for adding a deflection expression, you can use the Abaqus Expression Language (AEL) or Python scripting.

4)You can create an expression by navigating to the "Model" module and selecting "Expressions" from the drop-down menu.

5)Then in "Model" module, select "Output Requests" and create a new request such as displacements or strains, and set the "Component Scope" to the desired direction of deflection. In the "Expressions" section of the request, assign your deflection expression to the appropriate variable.

6) Then just run the analysis and post processing for extract the deflection result.

I think these steps helps you to solve your problem.

Kika VI

thank you :) Anish Bajla

Abaqus is a finite element analysis software used for various engineering simulations. To add a deflection expression, you'll typically need to define the appropriate boundary conditions and constraints on your model. The specific steps will depend on the type of deflection analysis you want to perform (e.g., static or dynamic). In general, you'll need to specify the material properties, apply loads, and set up contacts or restraints to simulate the deflection behavior accurately.

After you define the required boundary conditions and loading for the structure , you can select from the output field a displacement (u1,U2,U3) which represents a deflection in direction that proper for the structure to deform .

To define a deflection on Abaqus, you can use the following expression:

deflection = -pressure_load * thickness / (2 * E * (1 - nu^2))

where:

• deflection is the deflection of the plate
• pressure_load is the pressure load applied to the plate
• thickness is the thickness of the plate
• E is the Young's modulus of the plate
• nu is the Poisson's ratio of the plate

The expression above assumes that the plate is simply supported. If the plate is fixed, you will need to modify the expression accordingly.