# Rejection of the principle of material frame indifference

## TL;DR

This paper argues that the principle of material frame indifference conflicts with fundamental continuum mechanics laws and should be replaced by Galilean invariance for constraining constitutive models.

## Contribution

It demonstrates the incompatibility of material frame indifference with basic balance laws and advocates for using Galilean invariance instead.

## Key findings

- Material frame indifference conflicts with continuum mechanics laws
- Galilean invariance is a more appropriate principle for constitutive constraints
- Replaces the traditional principle with a classical invariance

## Abstract

The principle of material frame indifference is shown to be incompatible with the basic balance laws of continuum mechanics. In its role of providing constraints on possible constitutive prescriptions it must be replaced by the classical principle of Galilean invariance.