Passive force-length multiplier

Exponential passive element (Thelen 2003): zero below optimal length, rising as the fiber is stretched beyond it.

Usage

forceLengthPassive(norm_len, k_pe = 4, e0 = 0.6)

Arguments

norm_len

Normalised fiber length.

k_pe

Exponential shape (default 4).

e0

Passive strain at maximum isometric force (default 0.6).

Value

Passive multiplier (>= 0).

Examples

forceLengthPassive(c(1.0, 1.1, 1.2))
#> [1] 0.00000000 0.01768222 0.05212247