I want to know material property of CFRP.

Altair Forum User

HI,

 

 

 

I would like to know the properties of the quasi-isotropic CFRP laminated composite laminate to have such properties.

 

This CFRP is orthotropic material.

 

Elastic modulus in fiber direction E11 131GPa Elastic modulus in transverse direction E22 8.2GPa Elastic modulus in transverse direction E33 8.2GPa Shear modulus in 1-2 plane G12 4.5GPa Shear modulus in 1-3 plane G13 4.5GPa Shear modulus in 2-3 plane G23 3.5GPa Poisson's ratio v12 0.281 Poisson's ratio v13 0.281 Poisson's ratio v23 0.47 Tensile strength in fiber direction σt11 2000MPa Tensile strength in transverse direction σt22 61MPa Compression strength in fiber direction  σc11 1400Mpa Compression strength in transverse direction  σc22 130MPa Shear strength in 1-2 plane τ12 70MPa Shear strength in 1-3 plane τ13 70MPa Shear strength in 2-3 plane τ23 40MPa

 

Order stack the CFRP is 0 ° 90 ° 45 ° -45 ° -45 ° 45 ° 90 ° 0

 

And to obtain the properties for MAT25 type (in Radioss) of CFRP.

 

Material properties for MAT25 are E11, E22, E33, Nu_12, Iflag, G12, G23, G31, EPS_t1, EPS_m1, EPS_t2, EPS_m2, Wp_max, Ioff, Ratio, SIG1_yt, b1_t, n1_t, SIG1max_t, SIG2_yt, b2_t, n2_t, SIG2max_t, SIG1_yc, b1_c, n1_c, SIG1max_c, EPS1_c1, EPS2_c1, SIG2_yc, b2_c, n2_c, SIG2max_c, EPS1_c2, EPS2_c2, SIG12_yt, b12_t, n12_t, SIG12max_t.

 

Please show me how to know this properties.

Altair Forum User

Hi Domado,

 

E11= Young's modulus in direction1= 131GPa,

E22= Young’s modulus in direction 2= 8.2Gpa

E33= In direction 3

It is the same with shear modulus and poisons ratio. 

SIG1_yt= Tensile strength in fiber direction σt11= 2000MPa and the same applied for other tensile and shear strengths directions.

 

For plastic hardening and plastic strain, etc.. please contact vendor.