Help. I'm new to this forum. I've done basic FEA of rigid plastic and metal components but am using NEI Works to do some analyses of molded silicone rubber parts. I need hyperelastic material constants. I've attached a screen capture of what input it's asking for. Can anyone help me with generic molded silicone rubber constants to put in here? I'm a lowly designer, not an engineer, so, sadly, I don't know what any of these are. I rely on pre-made material databases for stuff and I don't know where to look for this or what they are.