Plane shear flow is an important configuration for granular materials. We study the variation of states in plane shear flow, that is, the jam‐flow, slip‐flow, and flow states, in particular the velocities, kinetic energy, contact numbers, and force chains. An open‐source physics‐engine system (BLENDER‐REATICLE) is adopted in this study, which is developed based on the impulse‐based dynamics with the 3D creation suite Blender and the physics engine Bullet. The particles are assumed to be rigid bodies and the elastic energy and gravitational potential energy are neglected in the plane shear flow without gravity. In the phase transition diagram with axial normal stress, shear stress, and solid fraction, the critical‐jamming solid fraction and the critical shear stress are found to increase with the normal stress. We show further that a common power law with the exponent of 0.5 captures well the distributions of particles with low energy. This power law indicates the existence of ergodicity in small‐energy transformation. Moreover, we present a general friction law where the relationships between the effective friction coefficients and the inertial number obey a zero‐order infinitesimal function in the vicinity of the point with Iboundary = 0.
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