Applying Thermal Effects To Stacks

To illustrate how to apply thermal effects to stacks, consider the stack shown below. The stack evaluates the distance from the bottom of the thread in the base to the bottom of the thread in the bolt. The stack path goes through the aluminum base, the nylon cover, and the steel bolt. The stack below is at room temperature which is assumed to be 20 degrees C.

To illustrate how to apply thermal effects to stacks, consider the stack shown below. The stack evaluates the distance from the bottom of the thread in the base to the bottom of the thread in the bolt. The stack path goes through the aluminum base, the nylon cover, and the steel bolt. The stack below is at room temperature which is assumed to be 20 degrees C.

In order to apply thermal effects, we need the coefficients of thermal expansion for each material. These are easily obtainable from various websites on the internet.

Then we need to decide on which temperatures we will use for evaluating the stack. We will choose 100 degrees C and minus 40 degrees C.

We want to calculate coefficients that we can multiply our distances by for each temperature. See below for our example:

Then we need to decide on which temperatures we will use for evaluating the stack. We will choose 100 degrees C and minus 40 degrees C.

We want to calculate coefficients that we can multiply our distances by for each temperature. See below for our example: