How to solve wear ODE equation

Hello Everyone,

I want to solve the following ODE equation, is comsol capable of solving this?

My wear equation is Wd=Cd*P(t),

where my Cd= kV/H K= wear coefficent, V= sliding velocity and H is hardness of material. My P(t) is contact pressure changing with wear or Time.

So, here my P(t) is changing with wear or time so its a post process result or value changing with time. How can, I give the contact pressure as function of time in ODE?

can anyone please help me on this?

Thanks in advance.