The digital evaluation of the cracking force of common vetch with the different characteristics of pod shattering

• Rui Dong, 
• De-ke Dong, 
• Kun-zhong Shao, 
• Qiang Zhou, 
• Xu-tian Chai, 
• Yang Dong, 
• Bin Nie, 
• Yan-rong Wang, 
• Zhi-peng Liu