Time history response and numerical models of a 3D shear frame

All the laboratory tests reported here have been conducted in the i4S laboratory, Indian Institute of Technology Mandi in India. The operating temperature has been the ambient room temperature which has been observed to be consistent within a range of 15-20o C which has been considered insignificant to cause any substantial thermal induced changes. The test setup is of a three-dimensional frame model that is designed in such a convenient manner that elements of this frame can be easily assembled or dismantled as needed without much complexity.
The frame is excited using an impact hammer in different directions and locations (for more details see the section 2.4). A total of sixteen datasets for undamaged and three damaged conditions of the structure are recorded and shared in the raw format.
Data contains following folders as-
Experimental Data: A undamaged_section folder which contains Data file name as und_position1_28th_jan.xlsx with the abbreviations should be read as: und- undamaged, position1 –force is applied at 1st position, 28th_jan – 28th January 2022, similarly for damage types (Folder named as e.g., Damaged_type1) are represented as heavy, lightbeam, reduc for type 1, 2 and 3 damages respectively. Supporting MATLAB codes are also attached in respective folders.
MATLAB Model: This folder contains 3 excel file as Damaged_type1, Damaged_type2, Undamaged, which represent heavy, light beam and undamaged beam respectively. This folder contains MATLAB files of 3D frame structure.
ABAQUS Model: This folder contains 4 folders named as Damaged_type1, Damaged_type2, Damaged_type3, Undamaged, which represent heavy, light beam, reduced cross section and undamaged beam respectively. The folder contains ABAQUS files (e.g., project1.cae, project1.jnl) of 3D frame structure.
Dynamic Analysis: This folder contains Abaqus1.xlsx file in which the acceleration response of Abaqus as well as experimental stored and in MATLAB file (Acceleration_comparision.m) Both responses compared.
Frequencies comparison: In this folder there is a file named comparision.xlsx, which is created for the comparison of frequencies of damaged and undamaged section.
Nano-indentation test Data: This data is used for the determination of modulus of elasticity of material. In this folder there is three files named as sample_pos (1,2,3) which means data collected from 3 different position of sample.
Noise Data: In this folder, there is a file (named main.m) used for the calculation of noise and covariance of noise of the instrument (accelerometer, strain sensor, impact hammer) and a Test_cov.xlsx is the data file of the noise of respective instrument.
Nonlinear Stress-Strain data: This folder contains 2 file ( rambur_osgoods.m and ramburg osgoods.xlsx) which contains actual stress-strain data and optimized ramburg osgoods data of the material.

本研究报告的全部实验室测试均在印度曼迪印度理工学院的i4S实验室开展。实验采用室温环境作为工作温度，经实测，室温稳定维持在15~20℃区间，该温度波动幅度极小，不会引发显著的热诱导效应。
本次实验采用三维框架模型作为测试装置，其设计兼顾操作便捷性，框架各构件可根据需求轻松组装或拆卸，无过高操作复杂度。通过冲击锤在不同方向与位置对框架施加激振激励（详细说明参见2.4节）。本数据集共包含16组原始格式的结构测试数据，分别对应无损伤状态与3种损伤工况。
数据集包含以下目录：
实验数据（Experimental Data）：该目录下设有undamaged_section文件夹，其中包含数据文件und_position1_28th_jan.xlsx，文件名缩写含义如下：und代表无损伤（undamaged），position1表示在第1个位置施加激振力，28th_jan代表2022年1月28日。损伤类型文件夹命名规则类似，例如Damaged_type1文件夹分别对应1、2、3号损伤：heavy、lightbeam、reduc分别指代重度损伤、轻型梁损伤与截面缩减损伤。各损伤类型文件夹中均附带配套的MATLAB代码。
MATLAB模型（MATLAB Model）：该目录包含3个Excel文件，分别为Damaged_type1、Damaged_type2、Undamaged，依次对应重度损伤、轻型梁损伤与无损伤梁模型，同时包含三维框架结构的MATLAB相关文件。
ABAQUS模型（ABAQUS Model）：该目录包含4个子文件夹，分别为Damaged_type1、Damaged_type2、Damaged_type3、Undamaged，依次对应重度损伤、轻型梁损伤、截面缩减损伤与无损伤梁模型，文件夹内包含三维框架结构的ABAQUS相关文件（如project1.cae、project1.jnl）。
动力学分析（Dynamic Analysis）：该目录下存有Abaqus1.xlsx文件，用于存储ABAQUS仿真与实验获得的加速度响应数据，同时附带MATLAB文件Acceleration_comparision.m，用于对两类响应进行对比分析。
频率对比（Frequencies comparison）：该目录下包含comparision.xlsx文件，用于对比有损伤与无损伤结构的固有频率。
纳米压痕测试数据（Nano-indentation test Data）：该数据集用于测定材料的弹性模量，目录内包含3个数据文件sample_pos(1,2,3)，分别对应从试样3个不同位置采集的测试数据。
噪声数据（Noise Data）：该目录下的main.m文件用于计算仪器（加速度计、应变传感器、冲击锤）的噪声与噪声协方差，Test_cov.xlsx为对应仪器的噪声测试数据文件。
非线性应力-应变数据（Nonlinear Stress-Strain data）：该目录包含2个文件：rambur_osgoods.m和ramburg osgoods.xlsx，分别存储材料的原始应力-应变数据与优化后的朗伯-奥斯古德（Ramburg-Osgood）本构模型数据。