Hi all, I tried to learn how to do modelling with shell and solid element. The shell element represent frp lay-up quasi-isotropic design with angle as shown in script below. Solid element represents steel material. The modelling condition; 1. the area is exactly at middle of two solid...current i modelled with NO GAP, should i create gap of 1.2 mm (total frp thk) ? (first question) my script; FINISH /clear /units,mpa /prep7 !element type et,1,solid185 et,2,shell181 keyopt,2,3,2 !full integration option !element size esize,5 !material properties !steel property mp,ex,1,210e3 mp,prxy,1,0.3 !frp property uimp,2,ex,ey,ez,138e3,10.1e3,10.1e3 uimp,2,gxy,gyz,gxz,5.13e3,2.98e3,5.13e3 uimp,2,prxy,pryz,prxz,0.26,0.41,0.26 !Creating solid model BLOCK,0,100,0,50,0,5, !top solid BLOCK,0,100,0,50,0,-5, !bottom solid !Creating shell mid-plate RECTNG,50,150,0,50, !mid shell sectype,2,shell secdata,0.15,2,0,3 secdata,0.15,2,90,3 secdata,0.15,2,45,3 secdata,0.15,2,135,3 secdata,0.15,2,0,3 secdata,0.15,2,90,3 secdata,0.15,2,45,3 secdata,0.15,2,135,3 !Apply meshing attribute !Steel material vsel,s,volu,,1 vsel,a,volu,,2 vatt,1,,1,0 allsel !frp material asel,s,area,,13 vatt,2,,2,0,2 !meshing the model vsel,s,volu,,1 vsel,a,volu,,2 vmesh,all allsel !shell meshing asel,s,area,,13 amesh,all allsel 2. second question; WIth current script, I got error on meshing; *** ERROR *** CP = 43.031 TIME= 00:21:00 Element type 2 is SHELL181, which cannot be used with the VMES command. Meshing of volume 1 aborted. eventhough i already defined correct solid bodies and area with correct command, i still received the error. What actually wrong with it? I really appreciate any comment on my script.. Thanks -- Best Regards, Azmi Mohammad PhD Student, Civil Engineering Department Faculty of Engineering, Universiti Putra Malaysia (UPM) 43400 UPM Serdang, Selangor Malaysia Email: azmi.mh@student.upm.edu.my