Masonry structural damage and failure under blasting vibration
Research on structural dynamic response and damage characteristics under blasting vibration is critical in structural safety assessment and blasting design. An orthotropic dynamic damage constitutive model of structural material is proposed in this article to improve the overly simple dynamic damage...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2016-02-01
|
| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814016633412 |
| _version_ | 1819017429059108864 |
|---|---|
| author | Shihai Chen Zihua Zhang |
| author_facet | Shihai Chen Zihua Zhang |
| author_sort | Shihai Chen |
| collection | DOAJ |
| description | Research on structural dynamic response and damage characteristics under blasting vibration is critical in structural safety assessment and blasting design. An orthotropic dynamic damage constitutive model of structural material is proposed in this article to improve the overly simple dynamic damage models of previous studies. A dynamic increase factor is used to assess the strain rate effect, and the dynamic damage stiffness matrix of the unit body is determined using the Sidoroff energy equivalence principle. The Mazars damage evolution model is used to calculate damage variables in the principal axis directions, and the Hoffman yield failure criterion for orthotropic materials is applied. The orthotropic dynamic damage constitutive model is input into dynamic finite element program LS-DYNA as the user subroutine to simulate the dynamic responses of typical masonry structures according to different blasting vibration excitations. The effects of varying particle peak velocity, principal frequency, and duration of blasting vibration on structural dynamic responses and damage are analyzed. The results show that maximal equivalent stress and strain increase positively with the particle peak velocity, structures have a danger frequency band, and structural damage increases with duration. |
| first_indexed | 2024-12-21T03:03:23Z |
| format | Article |
| id | doaj.art-ba05e1c46e8d4a8ab1acc33ff311be44 |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-12-21T03:03:23Z |
| publishDate | 2016-02-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-ba05e1c46e8d4a8ab1acc33ff311be442022-12-21T19:18:08ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402016-02-01810.1177/168781401663341210.1177_1687814016633412Masonry structural damage and failure under blasting vibrationShihai Chen0Zihua Zhang1Fujian Research Center for Tunneling and Urban Underground Space Engineering, Xiamen, P.R. ChinaCollege of Civil Engineering, Huaqiao University, Xiamen, P.R. ChinaResearch on structural dynamic response and damage characteristics under blasting vibration is critical in structural safety assessment and blasting design. An orthotropic dynamic damage constitutive model of structural material is proposed in this article to improve the overly simple dynamic damage models of previous studies. A dynamic increase factor is used to assess the strain rate effect, and the dynamic damage stiffness matrix of the unit body is determined using the Sidoroff energy equivalence principle. The Mazars damage evolution model is used to calculate damage variables in the principal axis directions, and the Hoffman yield failure criterion for orthotropic materials is applied. The orthotropic dynamic damage constitutive model is input into dynamic finite element program LS-DYNA as the user subroutine to simulate the dynamic responses of typical masonry structures according to different blasting vibration excitations. The effects of varying particle peak velocity, principal frequency, and duration of blasting vibration on structural dynamic responses and damage are analyzed. The results show that maximal equivalent stress and strain increase positively with the particle peak velocity, structures have a danger frequency band, and structural damage increases with duration.https://doi.org/10.1177/1687814016633412 |
| spellingShingle | Shihai Chen Zihua Zhang Masonry structural damage and failure under blasting vibration Advances in Mechanical Engineering |
| title | Masonry structural damage and failure under blasting vibration |
| title_full | Masonry structural damage and failure under blasting vibration |
| title_fullStr | Masonry structural damage and failure under blasting vibration |
| title_full_unstemmed | Masonry structural damage and failure under blasting vibration |
| title_short | Masonry structural damage and failure under blasting vibration |
| title_sort | masonry structural damage and failure under blasting vibration |
| url | https://doi.org/10.1177/1687814016633412 |
| work_keys_str_mv | AT shihaichen masonrystructuraldamageandfailureunderblastingvibration AT zihuazhang masonrystructuraldamageandfailureunderblastingvibration |