我不是很了解,看到dynasupport.com上写道 Positive contact energy: When friction is included in a contact definition, positive contact is to be expected. Friction SHOULD result in positive contact energy. In the absence of friction, you would hope to see a small net contact energy (net = sum of slave side energy and master side energy). Small is a matter of judgement -- 10% of peak internal energy might be considered acceptable for contact energy in the absence of contact friction.