Earthquakes are sudden, devastating natural disasters. Earthquakes are uncontrollable, and devastating earthquakes often cause building collapses, damage to infrastructure, and casualties, resulting in significant losses to personal safety and economic development.
Vibration excitation simulations of buildings, which simulate the forces acting on them during an earthquake, can improve their seismic resistance, investigate the stability of local structures during an earthquake, and provide a scientific basis for developing rapid post-earthquake search and rescue plans.
Structural dynamic model testing is an important means of studying the nonlinear dynamic response of structures and earthquake damage patterns, and is also an effective method for validating numerical analysis methods.
In scenarios simulating the impact vibration of buildings during an earthquake, it is necessary to accurately measure the dynamic response of the model structure, including the coordinates and displacements of key surface points during the vibration process, to analyze the vibration characteristics of the building's structural components under excitation.
With the rapid development of computer technology, optoelectronics technology, and digital image processing technology, a new method more suitable for measuring structural deformation has emerged: digital image correlation (DIC). It can measure various motion and changing parameters and is widely used in civil engineering.
The XTDIC full-field strain measurement system was independently developed by Xintuo 3D. It is used to measure and analyze the surface morphology, displacement and strain of objects, and obtain three-dimensional strain field and displacement field data. The measurement results are displayed intuitively. It has the characteristics of non-contact full-field measurement, high sensitivity, high precision, and a wide range of applications. It is an indispensable test instrument in modern structural experiments.
