// ReadTable loads path from datafile in table format
// Note: n -- number of lines to read. use -1 to read all lines
func (o *Path) ReadTable(ndim, nincs, niout int, fname string, n int, mσ, mε float64, stresspath bool) (err error) {
// constants
o.Nincs, o.Niout = nincs, niout
// read data table
keys, d, err := io.ReadTable(fname)
if err != nil {
return
}
if n < 0 {
n = len(d[keys[0]])
}
// find x-y-z keys
ex, ey, ez := "ex", "ey", "ez"
sx, sy, sz := "sx", "sy", "sz"
for _, key := range keys {
switch key {
case "Ex":
ex, ey, ez = "Ex", "Ey", "Ez"
case "Ea":
ex, ey, ez = "Et", "Er", "Ea"
case "ea":
ex, ey, ez = "et", "er", "ea"
case "Sx":
sx, sy, sz = "Sx", "Sy", "Sz"
case "Sa":
sx, sy, sz = "St", "Sr", "Sa"
case "sa":
sx, sy, sz = "st", "sr", "sa"
}
}
// set stress path
if stresspath {
o.Sx, o.Sy, o.Sz = make([]float64, n), make([]float64, n), make([]float64, n)
for i := 0; i < n; i++ {
o.Sx[i], o.Sy[i], o.Sz[i] = mσ*d[sx][i], mσ*d[sy][i], mσ*d[sz][i]
}
o.UseS = utl.IntVals(n, 1)
// set strain path
} else {
o.Ex, o.Ey, o.Ez = make([]float64, n), make([]float64, n), make([]float64, n)
for i := 0; i < n; i++ {
o.Ex[i], o.Ey[i], o.Ez[i] = mε*d[ex][i], mε*d[ey][i], mε*d[ez][i]
}
o.Sx, o.Sy, o.Sz = []float64{mσ * d[sx][0]}, []float64{mσ * d[sy][0]}, []float64{mσ * d[sz][0]}
o.UseE = utl.IntVals(n, 1)
}
// set additional information
return o.Init(ndim)
}
// contact_init initialises variables need by contact model
func (o *ElemU) contact_init(edat *inp.ElemData) {
// vertices on faces with contact
var contactverts []int
if len(o.Cell.FaceBcs) > 0 {
lverts := o.Cell.FaceBcs.GetVerts("contact")
for _, m := range lverts {
contactverts = append(contactverts, m)
}
}
o.Nq = len(contactverts)
// contact flag
o.HasContact = o.Nq > 0
if !o.HasContact {
return
}
// vertices on contact face; numbering
o.ContactId2vid = contactverts
o.Vid2contactId = utl.IntVals(o.Nu, -1)
o.Qmap = make([]int, o.Nq)
for μ, m := range o.ContactId2vid {
o.Vid2contactId[m] = μ
}
// flags
o.Macaulay, o.βrmp, o.κ = GetContactFaceFlags(edat.Extra)
// allocate coupling matrices
o.Kuq = la.MatAlloc(o.Nu, o.Nq)
o.Kqu = la.MatAlloc(o.Nq, o.Nu)
o.Kqq = la.MatAlloc(o.Nq, o.Nq)
}
// register element
func init() {
// information allocator
infogetters["p"] = func(cellType string, faceConds []*FaceCond) *Info {
// new info
var info Info
// number of nodes in element
nverts := shp.GetNverts(cellType)
// solution variables
ykeys := []string{"pl"}
info.Dofs = make([][]string, nverts)
for m := 0; m < nverts; m++ {
info.Dofs[m] = ykeys
}
// maps
info.Y2F = map[string]string{"pl": "ql"}
// vertices on seepage faces
lverts := GetVertsWithCond(faceConds, "seep")
for _, m := range lverts {
if m < nverts { // avoid adding vertices of superelement (e.g. qua8 vertices in this qua4 cell)
info.Dofs[m] = append(info.Dofs[m], "fl")
}
}
if len(lverts) > 0 {
ykeys = append(ykeys, "fl")
info.Y2F["fl"] = "nil"
}
// t1 and t2 variables
info.T1vars = ykeys
return &info
}
// element allocator
eallocators["p"] = func(cellType string, faceConds []*FaceCond, cid int, edat *inp.ElemData, x [][]float64) Elem {
// basic data
var o ElemP
o.Cid = cid
o.X = x
o.Shp = shp.Get(cellType)
o.Np = o.Shp.Nverts
// integration points
o.IpsElem, o.IpsFace = GetIntegrationPoints(edat.Nip, edat.Nipf, cellType)
if o.IpsElem == nil || o.IpsFace == nil {
return nil
}
nip := len(o.IpsElem)
// models
o.Mdl = GetAndInitPorousModel(edat.Mat)
if o.Mdl == nil {
return nil
}
// local starred variables
o.ψl = make([]float64, nip)
// scratchpad. computed @ each ip
ndim := Global.Ndim
o.g = make([]float64, ndim)
o.gpl = make([]float64, ndim)
o.ρwl = make([]float64, ndim)
o.tmp = make([]float64, ndim)
o.Kpp = la.MatAlloc(o.Np, o.Np)
o.res = new(mporous.LsVars)
// vertices on seepage faces
var seepverts []int
lverts := GetVertsWithCond(faceConds, "seep")
for _, m := range lverts {
if m < o.Np { // avoid adding vertices of superelement (e.g. qua8 vertices in this qua4 cell)
seepverts = append(seepverts, m)
}
}
o.Nf = len(seepverts)
o.HasSeep = o.Nf > 0
if o.HasSeep {
// vertices on seepage face; numbering
o.SeepId2vid = seepverts
o.Vid2seepId = utl.IntVals(o.Np, -1)
o.Fmap = make([]int, o.Nf)
for μ, m := range o.SeepId2vid {
o.Vid2seepId[m] = μ
}
// flags
o.Macaulay, o.βrmp, o.κ = GetSeepFaceFlags(edat.Extra)
// allocate coupling matrices
o.Kpf = la.MatAlloc(o.Np, o.Nf)
o.Kfp = la.MatAlloc(o.Nf, o.Np)
o.Kff = la.MatAlloc(o.Nf, o.Nf)
}
// set natural boundary conditions
for idx, fc := range faceConds {
o.NatBcs = append(o.NatBcs, &NaturalBc{fc.Cond, fc.FaceId, fc.Func, fc.Extra})
// allocate extrapolation structures
if fc.Cond == "ql" || fc.Cond == "seep" {
nv := o.Shp.Nverts
nip := len(o.IpsElem)
o.ρl_ex = make([]float64, nv)
o.dρldpl_ex = la.MatAlloc(nv, nv)
o.Emat = la.MatAlloc(nv, nip)
o.DoExtrap = true
if LogErr(o.Shp.Extrapolator(o.Emat, o.IpsElem), "element allocation") {
return nil
}
}
// additional seepage condition structures: hydrostatic flags
if fc.Cond == "seep" {
if len(o.Hst) == 0 {
o.Hst = make([]bool, len(faceConds))
}
if s_val, found := io.Keycode(fc.Extra, "plmax"); found {
o.Hst[idx] = (s_val == "hst")
}
}
}
// return new element
return &o
}
}
// Init initialises states variables after {Sx, Sy, Sz} or {Ex, Ey, Ez} have been set
func (o *Path) Init(ndim int) (err error) {
// constants
o.ndim = ndim
o.ncp = 2 * ndim
// size of slices and flags
hasS, hasE := false, false
allS, allE := true, true
nSx, nSy, nSz := len(o.Sx), len(o.Sy), len(o.Sz)
nEx, nEy, nEz := len(o.Ex), len(o.Ey), len(o.Ez)
if nSx > 0 {
hasS, allE = true, false
}
if nSy > 0 {
hasS, allE = true, false
}
if nSz > 0 {
hasS, allE = true, false
}
if nEx > 0 {
hasE, allS = true, false
}
if nEy > 0 {
hasE, allS = true, false
}
if nEz > 0 {
hasE, allS = true, false
}
// check nS
if nSx != nSy || nSx != nSz {
return chk.Err(_path_err02, nSx, nSy, nSz)
}
// check for initial stresses
if nSx < 1 || nSy < 1 || nSz < 1 {
return chk.Err(_path_err03)
}
// unset hasS if only initial stress were given
if nSx == 1 {
hasS, allE = false, true
if !hasE {
return chk.Err(_path_err04)
}
}
// other checks
o.size = 0 // number of path components
if hasS {
o.size = nSx
}
if hasE {
if nEx != nEy || nEx != nEz {
return chk.Err(_path_err05, nEx, nEy, nEz)
}
o.size = nEx
}
if hasS && hasE {
if nEx != nSx || nEy != nSx || nEz != nSx {
return chk.Err(_path_err06)
}
}
if !allS && !allE {
if len(o.UseS) != nSx || len(o.UseE) != nSx {
return chk.Err(_path_err07, len(o.UseS), len(o.UseE), nSx)
}
}
// check size and Nincs
if o.size < 2 {
return chk.Err(_path_err08)
}
if o.Nincs < 1 {
o.Nincs = 1
}
// multipliers
if o.MultS < 1e-7 {
o.MultS = 1
}
if o.MultE < 1e-7 {
o.MultE = 1
}
// set use flags
if allS {
o.UseS = utl.IntVals(o.size, 1)
o.UseE = make([]int, o.size)
}
if allE {
o.UseE = utl.IntVals(o.size, 1)
o.UseS = make([]int, o.size)
}
return
}
// register element
func init() {
// information allocator
infogetters["p"] = func(sim *inp.Simulation, cell *inp.Cell, edat *inp.ElemData) *Info {
// new info
var info Info
// number of nodes in element
nverts := cell.GetNverts(edat.Lbb)
// solution variables
ykeys := []string{"pl"}
info.Dofs = make([][]string, nverts)
for m := 0; m < nverts; m++ {
info.Dofs[m] = ykeys
}
// maps
info.Y2F = map[string]string{"pl": "ql"}
// vertices on seepage faces
if len(cell.FaceBcs) > 0 {
lverts := cell.FaceBcs.GetVerts("seep")
for _, m := range lverts {
if m < nverts { // avoid adding vertices of superelement (e.g. qua8 vertices in this qua4 cell)
info.Dofs[m] = append(info.Dofs[m], "fl")
}
}
if len(lverts) > 0 {
ykeys = append(ykeys, "fl")
info.Y2F["fl"] = "nil"
}
}
// t1 and t2 variables
info.T1vars = ykeys
return &info
}
// element allocator
eallocators["p"] = func(sim *inp.Simulation, cell *inp.Cell, edat *inp.ElemData, x [][]float64) Elem {
// basic data
var o ElemP
o.Cell = cell
o.X = x
o.Np = o.Cell.Shp.Nverts
o.Ndim = sim.Ndim
// integration points
var err error
o.IpsElem, o.IpsFace, err = o.Cell.Shp.GetIps(edat.Nip, edat.Nipf)
if err != nil {
chk.Panic("cannot allocate integration points of p-element with nip=%d and nipf=%d:\n%v", edat.Nip, edat.Nipf, err)
}
nip := len(o.IpsElem)
// models
o.Mdl, err = GetAndInitPorousModel(sim.MatParams, edat.Mat, sim.Key)
if err != nil {
chk.Panic("cannot get model for p-element {tag=%d id=%d material=%q}:\n%v", cell.Tag, cell.Id, edat.Mat, err)
}
// local starred variables
o.ψl = make([]float64, nip)
// scratchpad. computed @ each ip
o.g = make([]float64, o.Ndim)
o.gpl = make([]float64, o.Ndim)
o.ρwl = make([]float64, o.Ndim)
o.tmp = make([]float64, o.Ndim)
o.Kpp = la.MatAlloc(o.Np, o.Np)
o.res = new(mporous.LsVars)
// vertices on seepage faces
var seepverts []int
if len(cell.FaceBcs) > 0 {
lverts := cell.FaceBcs.GetVerts("seep")
for _, m := range lverts {
if m < o.Np { // avoid adding vertices of superelement (e.g. qua8 vertices in this qua4 cell)
seepverts = append(seepverts, m)
}
}
}
o.Nf = len(seepverts)
o.HasSeep = o.Nf > 0
if o.HasSeep {
// vertices on seepage face; numbering
o.SeepId2vid = seepverts
o.Vid2seepId = utl.IntVals(o.Np, -1)
o.Fmap = make([]int, o.Nf)
for μ, m := range o.SeepId2vid {
o.Vid2seepId[m] = μ
}
// flags
o.Macaulay, o.βrmp, o.κ = GetSeepFaceFlags(edat.Extra)
// allocate coupling matrices
o.Kpf = la.MatAlloc(o.Np, o.Nf)
o.Kfp = la.MatAlloc(o.Nf, o.Np)
o.Kff = la.MatAlloc(o.Nf, o.Nf)
}
// set natural boundary conditions
for idx, fc := range cell.FaceBcs {
o.NatBcs = append(o.NatBcs, &NaturalBc{fc.Cond, fc.FaceId, fc.Func, fc.Extra})
// allocate extrapolation structures
if fc.Cond == "ql" || fc.Cond == "seep" {
nv := o.Cell.Shp.Nverts
nip := len(o.IpsElem)
o.ρl_ex = make([]float64, nv)
o.dρldpl_ex = la.MatAlloc(nv, nv)
o.Emat = la.MatAlloc(nv, nip)
o.DoExtrap = true
err = o.Cell.Shp.Extrapolator(o.Emat, o.IpsElem)
if err != nil {
chk.Panic("cannot build extrapolator matrix for p-element:\n%v", err)
}
}
// additional seepage condition structures: hydrostatic flags
if fc.Cond == "seep" {
if len(o.Hst) == 0 {
o.Hst = make([]bool, len(cell.FaceBcs))
}
if s_val, found := io.Keycode(fc.Extra, "plmax"); found {
o.Hst[idx] = (s_val == "hst")
}
}
}
// return new element
return &o
}
}