# NLE1D01 Nonlinear Elastic 1D Type 01 The `NLE1D01` material is a smoothed uniaxial bilinear elastic material model which uses the MP formula to approximate the bilinear backbone. ## Syntax ``` material NLE1D01 (1) (2) (3) (4) [5] [6] # (1) int, unique material tag # (2) double, elastic modulus # (3) double, turning stress # (4) double, hardening ratio # [5] double, radius of transition, default: 20 # [6] double, density, default: 0 ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://tlcfem.gitbook.io/suanpan-manual/material/material1d/elastic/nle1d01.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.