inp

type BeamSection struct {
	Section  string
	Elset    string
	Material string

	Offset1, Offset2 float64

	Thks   [2]float64
	Vector [3]float64
}

type Boundary struct {
	LoadLocation string
	Start        int
	Finish       int
	Factor       float64
}

type Cload struct {
	Position  string
	Direction int
	Value     float64
}

type Condition struct {
	Type            string
	NodeSet         string
	TemperatureNode float64
}

type Dat struct {
	BucklingFactors    []float64
	Temperatures       []Single
	Displacements      []Record
	EigenDisplacements [][]Record
	Stresses           []Stress
	Forces             []Record
	TotalForces        []Record
	EqPlasticStrain    []Pe
}

type DistributingCoupling struct {
	ElsetName     string
	ElsetNode     int
	NodeIndexes   []int // with weight 1.0
	NodeNames     []string
	ReferenceNode int
}

type Dload struct {
	Values []string
}

type Element struct {
	Type  string
	Elset string
	Index int
	Nodes []int
}

type Expansion struct {
	Value       float64 // Expansion
	Temperature float64 // Temperature
}

type File struct {
	Options []string
}

type Material struct {
	Name       string
	Density    float64
	Expansions []Expansion
	Properties []Property
	Plastic    struct {
		Hardening string
		Data      [10]struct {
			StressVonMises float64
			PlasticStrain  float64
			Temperature    float64
		}
	}
}

type Model struct {
	Heading           string
	Nodes             []Node
	Elements          []Element
	Nsets             []Set
	Elsets            []Set
	Surfaces          []Surface
	Materials         []Material
	InitialConditions Condition
	BeamSections      []BeamSection
	SolidSections     []SolidSection
	ShellSections     []ShellSection
	Boundaries        []Boundary
	Springs           []Spring
	Steps             []Step
	TimePoint         struct {
		Name     string
		Generate bool
		Time     []float64
	}
	RigidBodies           []RigidBody
	DistributingCouplings []DistributingCoupling
}

type Node struct {
	Nodeset string // NSET
	Index   int
	Coord   [3]float64
}

type Pe struct {
	Name     string
	Time     float64
	Elem     int
	IntegPnt int
	Value    float64
}

type Print struct {
	SetName        string
	Frequency      string
	Output         string
	TimePoints     string
	TotalOnly      bool
	ContactElement bool
	Global         bool
	Options        []string
}

type Property struct {
	E           float64 // Young`s modudlus
	V           float64 // Poisson`s ratio
	Temperature float64 // Temperature
}

type Record struct {
	Name string
	Time float64
	Node int

	// (vx,vy,vz)
	// (fx,fy,fz)
	Values [3]float64
}

type RigidBody struct {
	Nset    string
	RefNode int
	RotNode int
}

type Set struct {
	Name     string
	Generate bool
	Addition []string
	Indexes  []int
	Names    []string
}

type ShellSection struct {
	Elset          string
	Offset         float64
	Composite      bool
	NodalThickness bool
	Property       [12]struct {
		Thickness float64
		Material  string
	}
}

type Single struct {
	Name  string
	Time  float64
	Node  int
	Value float64
}

type SolidSection struct {
	Elset    string
	Material string
}

type Spring struct {
	ElsetName      string
	Freedom        [2]int
	SpringConstant float64
}

type Step struct {
	IsStatic bool
	Static   struct {
		TimeInc    float64
		TimePeriod float64
	}

	Nlgeom bool // genuine nonlinear geometric calculation
	Inc    int  // The maximum number of increments in the step (for automatic

	Boundaries []Boundary

	Buckle struct {
		Number   int     // Number of buckling factors desired (usually 1)
		Accuracy float64 // Accuracy desired (default: 0.01).
	}
	NodeFiles    []Print
	ElFiles      []Print
	NodePrints   []Print
	ElPrints     []Print
	Cloads       []Cload
	Dloads       []Dload
	Temperatures []Temperature
}

type Stress struct {
	Name       string
	Time       float64
	Node       int
	IntegPnt   int
	Values     [6]float64 // (elem, integ.pnt.,sxx,syy,szz,sxy,sxz,syz)
	SecondName string
}

type Surface struct {
	Name          string
	IsElementType bool
	List          [][2]string
}

type Temperature struct {
	Parameters      []string
	NodeSet         string
	TemperatureNode float64
	Gradient2       float64
	Gradient1       float64
}