A multibody modeling method according to an embodiment of the present invention comprises the steps of: receiving an input defining a first body and a second body from an input interface; receiving an input defining a connection relationship between the first body and the second body from the input interface; receiving an input for changing properties of at least one of the first body and the second body from the input interface; and redefining the connection relationship if the properties are changed in a modeling module. The properties may be one of a rigid body, a fully flexible body, and a limited flexible body.
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