generate_strainrange_fbm: Generate range of strains for FBM model (discrete root...

In GJMeijer/FBMcw: Generic fibre bundle model for soil reinforcement by plant roots

Description

This function generates a range of strains to be used for FBM calculations, assuming discrete root classes. Strain is given as the (normalised) strain in the reference root (tensile strain/tensile strain to peak). It calculates the strains at failure of each root class, and optionally adds a zero-strain points and the strain points just after root failures (to draw nice 'sawtooth' plots).

Usage

generate_strainrange_fbm(
  dr,
  tru,
  betaF,
  tru0,
  includezero = T,
  includefailure = T,
  failureoffset = 1e-06,
  margin = NULL,
  dr0 = 1,
  outputperclass = F
)

Arguments

dr	representative diameter of root class (numeric array, size m)
tru	tensile strenght of roots in root class (numeric array, size m)
betaF	load sharing parameter (numeric scalar)
tru0	tensile strength of root with reference diameter
includezero	If TRUE, includes a zero-strain point
includefailure	if TRUE, includes a extra strain point just after failure in each class. The offset is governed by the value of 'failureoffset'
failureoffset	The strain offset for strain points just after root failure. This offset is equal to the value of 'includefailure' multiplied by strain to get the last root to fail
margin	if specified, add an extra point at ‘margin*max(epsr0rel)’
dr0	Reference diameter (numeric scalar, default 1.0)
outputperclass	if TRUE, return the values of breakage strain for each input class

Value

numeric array with (reference) strains 'epsr0rel'

Examples

generate_strainrange_fbm(seq(1,5,l=10), 10e3*seq(1.5,1,l=10), 1, 10e3)

GJMeijer/FBMcw documentation built on Dec. 17, 2021, 9:23 p.m.