sfepy.terms.terms_contact module

class sfepy.terms.terms_contact.ContactInfo(**kwargs)

Various contact-related data of contact terms.

class sfepy.terms.terms_contact.ContactTerm(*args, **kwargs)

Contact term with a penalty function.

The penalty function is defined as \varepsilon_N \langle g_N(\ul{u}) \rangle, where \varepsilon_N is the normal penalty parameter and \langle g_N(\ul{u}) \rangle are the Macaulay’s brackets of the gap function g_N(\ul{u}).

This term has a dynamic connectivity of DOFs in its region.

Definition:

\int_{\Gamma_{c}} \varepsilon_N \langle g_N(\ul{u}) \rangle \ul{n} \ul{v}

Call signature:

dw_contact

(material, virtual, state)

Arguments:

• material : \varepsilon_N
• virtual : \ul{v}
• state : \ul{u}

arg_shapes = {'material': '.: 1', 'state': 'D', 'virtual': ('D', 'state')}

arg_types = ('material', 'virtual', 'state')

call_function(fargs)

eval_real(shape, fargs, mode='eval', term_mode=None, diff_var=None, **kwargs)

static function(out_cc)

get_fargs(epss, virtual, state, mode=None, term_mode=None, diff_var=None, **kwargs)

integration = 'surface'

name = 'dw_contact'