A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation
The widely used Bouc–Wen–Baber–Noori (BWBN) hysteresis model, although effective in simulating hysteresis behaviors, does not account for variations in the pinching region of hysteretic behaviors. This can negatively impact the accuracy of the BWBN model in simulating structural responses and damage...
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2025-01-01
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| author | Mohammad Rabiepour Cong Zhou James Geoffrey Chase |
| author_facet | Mohammad Rabiepour Cong Zhou James Geoffrey Chase |
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| description | The widely used Bouc–Wen–Baber–Noori (BWBN) hysteresis model, although effective in simulating hysteresis behaviors, does not account for variations in the pinching region of hysteretic behaviors. This can negatively impact the accuracy of the BWBN model in simulating structural responses and damage mechanisms in structures such as reinforced concrete (RC) and timber, which exhibit highly pinched hysteresis behavior when damaged by earthquakes. This paper introduces a BWBN model with varying pinching region characteristics (BWBN-VP model) which can degrade pinching stiffness and increase pinching effects under seismic loads. Unlike the original BWBN model using constant pinching stiffness (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>k</mi><mi>p</mi></msub></mrow></semantics></math></inline-formula>), this modified new model, inspired by real-world structural damage, improves structural damage detection, identifiability, and analysis in real-world scenarios. Model validation uses experimental data from three RC column tests with different failure modes and hysteresis loop shapes, resulting in an ~0.98 correlation coefficient between the experimental and simulated responses. Further validation uses real-world seismic data from a six-story RC building and achieves an average correlation of ~0.97 with a minor 2.5% difference in the peak restoring forces compared to direct measurements. The proposed BWBN-VP model also accurately and realistically captures damage to both the elastic and pinching stiffness values of the building, with an average difference of ~4%. Results confirm that the BWBN-VP model, compared to the original, more accurately predicts hysteretic responses, especially in Shear Failure (SF) modes. Therefore, the BWBN-VP model, superior in simulating highly pinched behaviors in RC and timber structures, would be an advanced tool for resilient seismic design and Structural Health Monitoring (SHM). |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-600c5b18f28643a38b5d6fb3f9552f312025-01-24T13:20:36ZengMDPI AGApplied Sciences2076-34172025-01-0115272410.3390/app15020724A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage SimulationMohammad Rabiepour0Cong Zhou1James Geoffrey Chase2Department of Mechanical Engineering, University of Canterbury, Christchurch 8041, New ZealandDepartment of Mechanical Engineering, University of Canterbury, Christchurch 8041, New ZealandDepartment of Mechanical Engineering, University of Canterbury, Christchurch 8041, New ZealandThe widely used Bouc–Wen–Baber–Noori (BWBN) hysteresis model, although effective in simulating hysteresis behaviors, does not account for variations in the pinching region of hysteretic behaviors. This can negatively impact the accuracy of the BWBN model in simulating structural responses and damage mechanisms in structures such as reinforced concrete (RC) and timber, which exhibit highly pinched hysteresis behavior when damaged by earthquakes. This paper introduces a BWBN model with varying pinching region characteristics (BWBN-VP model) which can degrade pinching stiffness and increase pinching effects under seismic loads. Unlike the original BWBN model using constant pinching stiffness (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>k</mi><mi>p</mi></msub></mrow></semantics></math></inline-formula>), this modified new model, inspired by real-world structural damage, improves structural damage detection, identifiability, and analysis in real-world scenarios. Model validation uses experimental data from three RC column tests with different failure modes and hysteresis loop shapes, resulting in an ~0.98 correlation coefficient between the experimental and simulated responses. Further validation uses real-world seismic data from a six-story RC building and achieves an average correlation of ~0.97 with a minor 2.5% difference in the peak restoring forces compared to direct measurements. The proposed BWBN-VP model also accurately and realistically captures damage to both the elastic and pinching stiffness values of the building, with an average difference of ~4%. Results confirm that the BWBN-VP model, compared to the original, more accurately predicts hysteretic responses, especially in Shear Failure (SF) modes. Therefore, the BWBN-VP model, superior in simulating highly pinched behaviors in RC and timber structures, would be an advanced tool for resilient seismic design and Structural Health Monitoring (SHM).https://www.mdpi.com/2076-3417/15/2/724Bouc–Wen–Baber–Noori Model (BWBN)pinched hysteresis behaviorHysteresis Loop Analysis (HLA)Structural Health Monitoring (SHM) |
| spellingShingle | Mohammad Rabiepour Cong Zhou James Geoffrey Chase A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation Applied Sciences Bouc–Wen–Baber–Noori Model (BWBN) pinched hysteresis behavior Hysteresis Loop Analysis (HLA) Structural Health Monitoring (SHM) |
| title | A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation |
| title_full | A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation |
| title_fullStr | A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation |
| title_full_unstemmed | A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation |
| title_short | A Hysteresis Model Incorporating Varying Pinching Stiffness and Spread for Enhanced Structural Damage Simulation |
| title_sort | hysteresis model incorporating varying pinching stiffness and spread for enhanced structural damage simulation |
| topic | Bouc–Wen–Baber–Noori Model (BWBN) pinched hysteresis behavior Hysteresis Loop Analysis (HLA) Structural Health Monitoring (SHM) |
| url | https://www.mdpi.com/2076-3417/15/2/724 |
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