def test_kT(): mns = [[4, 4], [4, 5], [4, 6], [5, 5], [5, 6], [6, 6], [8, 9], [9, 8]] for m, n in mns: for model in ['plate_clt_donnell_bardell', 'cpanel_clt_donnell_bardell']: p = Panel() p.model = model p.w1tx = 0 p.u1tx = 1 p.u1ty = 1 p.u2ty = 1 p.a = 2. p.b = 0.5 p.r = 10 p.stack = [0, 90, -45, +45] p.plyt = 1e-3*0.125 p.laminaprop = (142.5e9, 8.7e9, 0.28, 5.1e9, 5.1e9, 5.1e9) p.m = m p.n = n p.nx = m p.ny = n P = 1000. npts = 5 p.forces_inc = [] for y in np.linspace(0, p.b, npts): p.forces_inc.append([0., y, P/(npts-1.), 0, 0]) p.forces_inc[0][2] /= 2. p.forces_inc[-1][2] /= 2. k0 = p.calc_k0(silent=True) kT = p.calc_kT(c=np.zeros(p.get_size()), silent=True) error = np.abs(kT-k0).sum() assert error < 1.e-7
def test_kT(): mns = [[4, 4], [4, 5], [4, 6], [5, 5], [5, 6], [6, 6], [8, 9], [9, 8]] for m, n in mns: for model in [ 'plate_clt_donnell_bardell', 'cpanel_clt_donnell_bardell' ]: p = Panel() p.model = model p.w1tx = 0 p.u1tx = 1 p.u1ty = 1 p.u2ty = 1 p.a = 2. p.b = 0.5 p.r = 10 p.stack = [0, 90, -45, +45] p.plyt = 1e-3 * 0.125 p.laminaprop = (142.5e9, 8.7e9, 0.28, 5.1e9, 5.1e9, 5.1e9) p.m = m p.n = n p.nx = m p.ny = n P = 1000. npts = 5 p.forces_inc = [] for y in np.linspace(0, p.b, npts): p.forces_inc.append([0., y, P / (npts - 1.), 0, 0]) p.forces_inc[0][2] /= 2. p.forces_inc[-1][2] /= 2. k0 = p.calc_k0(silent=True) kT = p.calc_kT(c=np.zeros(p.get_size()), silent=True) error = np.abs(kT - k0).sum() assert error < 1.e-7