# mpt Module¶

defines readers for BDF objects in the OP2 MPT/MPTS table

class pyNastran.op2.tables.geom.mpt.MPT(op2: OP2Geom)[source]

Bases: object

defines methods for reading op2 materials & time-stepping methods

add_op2_material(mat)[source]
property factor
junk_read_mat11(data: bytes, n: int) → int[source]

Solid element orthotropic material property definition. Defines the material properties for a 3-D orthotropic material for isoparametric solid elements.

Word Name Type Description

1 MID I Material identification number 2 E1 RS Modulus of elasticity in the longitudinal direction or 1-direction 3 E2 RS Modulus of elasticity in the lateral direction or 2-direction 4 E3 RS Modulus of elasticity in the thickness direction or 3-direction 5 NU12 RS Poisson’s ratio (ε2/ε1 for uniaxial loading in the 1-direction) 6 NU13 RS Poisson’s ratio (ε3/ε1 for uniaxial loading in the 1-direction) 7 NU23 RS Poisson’s ratio (ε3/ε2 for uniaxial loading in the 2-direction) 8 G12 RS In-plane shear modulus 9 G13 RS Transverse shear modulus for shear in the 1–3 plane 10 G23 RS Transverse shear modulus for shear in the 2–3 plane 11 RHO RS Mass density 12 A1 RS Thermal expansion coefficient in the longitudinal direction 13 A2 RS Thermal expansion coefficient in the lateral direction 14 A3 RS Thermal expansion coefficient in the thickness direction 15 TREF RS Reference temperature for calculation of thermal loads 16 GE RS Structural damping coefficient 17 UNDEF(16) None

read_mpt_4(data: bytes, ndata: int)[source]
property size