of.mat.cohesive

of.mat.cohesive *element_tag* <string> *material_type* <string> parameter_keyword1 <string> parameter_value1 <double> …

Assign the material parameters to the target cohesive element groups. The details of materials in OpenFDEM can be found in the table below.

Material type	Constitutive keyword	Parameter keywords	Units
Evans_Marathe cohesive law	EM	tension - tension strength	Pa
		cohesion - cohesion strength	Pa
		friction - friction
		pn - normal stiffness, will be assigned by default \[pn = \lambda(K_{1} + K_{2})/2\]	Pa
		pt - tangential stiffness, will be assigned by default \[pn = \lambda(G_{1} + G_{2})/2\]	Pa
		GI - energy release rate in normal	J/m²
		GII - energy release rate in tangential	J/m²
		beta-I - viscous of CZM in normal	Pa/s
		beta-II - viscous of CZM in tangential	Pa/s
		We also have a table to each variables if you want them not be constant
		ttable - table for tension
		ctable - table for cohesion
		ftable - table for friction
		GItable - table for GI
		GIItable - table for GII
Strain rate Evans_Marathe cohesive law	EM_dyn	tension - tension strength	Pa
		cohesion - cohesion strength	Pa
		friction - friction
		pn - normal stiffness, will be assigned by default \[pn = \lambda(K_{1} + K_{2})/2\]	Pa
		pt - tangential stiffness, will be assigned by default \[pn = \lambda(G_{1} + G_{2})/2\]	Pa
		GI - energy release rate in normal	J/m²
		GII - energy release rate in tangential	J/m²
		beta-I - viscous of CZM in normal	Pa/s
		beta-II - viscous of CZM in tangential	Pa/s
		We also have a table to each variables if you want them not be constant
		ttable - table for tension
		ctable - table for cohesion
		ftable - table for friction
		GItable - table for GI
		GItable - table for GII
		n_rate - critical strain rate in normal	/s
		n_pow - dynamic increase factor in normal
		s_rate - critical strain rate in tangential	/s
		s_pow - dynamic increase factor in tangential
Ortiz and Pandolfi exponential Cohesive Law	OP	tension - tension strength	Pa
		cohesion - cohesion strength	Pa
		pn - normal stiffness, will be assigned by default \[pn = \lambda(K_{1} + K_{2})/2\]	Pa
		pt - tangential stiffness, will be assigned by default \[pn = \lambda(G_{1} + G_{2})/2\]	Pa
		op - peak COD in normal	m
		sp - peak COD in tangential	m
Linear Cohesive Law	LINEAR	tension - tension strength	Pa
		cohesion - cohesion strength	Pa
		friction - friction
		pn - normal stiffness, will be assigned by default \[pn = \lambda(K_{1} + K_{2})/2\]	Pa
		pt - tangential stiffness, will be assigned by default \[pn = \lambda(G_{1} + G_{2})/2\]	Pa
		GI - energy release rate in normal	J/m²
		GII - energy release rate in tangential	J/m²
		We also have a table to each variables if you want them not be constant
		ttable - table for tension
		ctable - table for cohesion
		ftable - table for friction
		GItable - table for GI
		GIItable - table for GII
Heterogeneous Evans_Marathe cohesive law	EM_het	To be added in the tutorial, if you want to use this model, contact the developer
Anistropic Evans_Marathe cohesive law	EM_ani	To be added in the tutorial, if you want to use this model, contact the developer

Example:

of.mat.cohesive 'default' EM ten 1e6 coh 3e6 fric 0.3 GI 10 GII 50