## [Libmesh-users] format in Newmark system

 [Libmesh-users] format in Newmark system From: li pan - 2005-12-09 17:19:02 ```hi, could anybody tell me, how the format of vector and matrix in Newmark system look like? For example: dim = 3; number of nodes is 4; variable u means "displacement" I'm not sure whether u has format (u1_x u2_x u3_x u4_x u1_y u2_y u3_y u4_y u1_z u2_z u3_z u4_z) or (u1_x u1_y u1_z u2_x u2_y u2_z u3_x u3_y u3_z u4_x u4_y u4_z) And the same with stiffness matrix. Whether Ke has format Kuu Kuv Kuw Kvu Kvv Kvw Kwu Kwv Kww (Kuu and other submatrix are 4*4 matrix) or K11 K12 K13 K14 K21 K22 K23 K24 K31 K32 K33 K34 K41 K42 K43 K44 (K11 and other submatrix are 3*3 matrix)? Can anybody help me? Thanx a lot. best pan __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ```

 [Libmesh-users] format in Newmark system From: li pan - 2005-12-09 17:19:02 ```hi, could anybody tell me, how the format of vector and matrix in Newmark system look like? For example: dim = 3; number of nodes is 4; variable u means "displacement" I'm not sure whether u has format (u1_x u2_x u3_x u4_x u1_y u2_y u3_y u4_y u1_z u2_z u3_z u4_z) or (u1_x u1_y u1_z u2_x u2_y u2_z u3_x u3_y u3_z u4_x u4_y u4_z) And the same with stiffness matrix. Whether Ke has format Kuu Kuv Kuw Kvu Kvv Kvw Kwu Kwv Kww (Kuu and other submatrix are 4*4 matrix) or K11 K12 K13 K14 K21 K22 K23 K24 K31 K32 K33 K34 K41 K42 K43 K44 (K11 and other submatrix are 3*3 matrix)? Can anybody help me? Thanx a lot. best pan __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ```