edges_quadrilateral: Get properties of real edge nodes in quadrilateral domain

In GJMeijer/soilmech: R functions and plots for Soil Mechanics teaching

Get properties of real edge nodes in quadrilateral domain

Description

Function returns all real nodes on the edges of a quadrilateral domain, as well as some key properties such as positions and a normal vector

Function returns all real nodes on the edges of a quadrilateral domain, as well as some key properties such as positions and a normal vector

Usage

edges_quadrilateral(
  nx,
  ny,
  x1,
  x2,
  x3,
  x4,
  y1,
  y2,
  y3,
  y4,
  i0 = 0,
  domain = 1,
  ...
)

edges_quadrilateral(
  nx,
  ny,
  x1,
  x2,
  x3,
  x4,
  y1,
  y2,
  y3,
  y4,
  i0 = 0,
  domain = 1,
  ...
)

Arguments

nx, ny	number of real nodes in a and b-directions
x1, x2, x3, x4, y1, y2, y3, y4	x and y positions of the corner points of the quadrilateral. Corners are numbered in clockwise order.
i0	node offset
domain	domain identifier
...	additional arguments to pass

Value

tibble with all nodes on edges. Contains fields for the domain identifier ('domain'), edge ('edge', numbered clockwise), node index ('i'), row and column indices ('ix', 'iy'), the unit vector normal to the edge (positing towards the domain) ('vx', 'vy') and first order derivatives of position ('x_a', 'x_b', 'y_a', 'y_b')

tibble with all nodes on edges. Contains fields for the domain identifier ('domain'), edge ('edge', numbered clockwise), node index ('i'), row and column indices ('ix', 'iy'), the unit vector normal to the edge (positing towards the domain) ('vx', 'vy') and first order derivatives of position ('x_a', 'x_b', 'y_a', 'y_b')

Examples

nx <- 20
ny <- 10
x1 <- 0
x2 <- 0
x3 <- 1
x4 <- 1
y1 <- 0
y2 <- 1
y3 <- 2
y4 <- 0
edges_quadrilateral(nx, ny, x1, x2, x3, x4, y1, y2, y3, y4)
nx <- 20
ny <- 10
x1 <- 0
x2 <- 0
x3 <- 1
x4 <- 1
y1 <- 0
y2 <- 1
y3 <- 2
y4 <- 0
edges_quadrilateral(nx, ny, x1, x2, x3, x4, y1, y2, y3, y4)

GJMeijer/soilmech documentation built on May 22, 2022, 10:39 a.m.