I am having trouble in defining the Composite laminate stacks. Solidworks simulation is having the option for defining the laminate stacks in different thickness and in different orientation angles. But, i want to know is there any certain design rules is available for defining the thickness and orientation angles? if it is there, anyone can help me to know about the design calculation. In solidworks they haven't mention anything about the design rules for composite laminate stack. If i changed the orientation angles between the laminate the displacement results are varying a lot. Please help me on this.