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Journals / Recep Tayyip Erdoğan Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2025 / Cilt: 6 Sayı: 3

Assessment of a Proposed Elasto-Plastic Homogenized Concrete Model for Reinforced Concrete Structures under Blast Loads

Patlama Yükleri Altındaki Betonarme Yapılar için Önerilen Elasto-Plastik Homojenize Beton Modelinin Değerlendirilmesi

Gökçe Armağan(RECEP TAYYİP ERDOĞAN ÜNİVERSİTESİ)0000-0001-7712-1642
Ali Gürbüz(RECEP TAYYİP ERDOĞAN ÜNİVERSİTESİ)0000-0003-1123-9968
Pages
815–824
Publication Date
2025-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Furthermore, the HC model significantly reduced analysis time and model complexity compared to the RC model.

📌 3 Key Takeaways

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Objective & Hypothesis:Accurate analysis of structures subjected to blasting is crucial for both the safe construction and controlled demolition of structures.
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Key Findings & Data:This study, conducted in this context, aims to evaluate the behavior of a heterogeneous (separate concrete-reinforcement) classical reinforced concrete model (RC) and a homogenized elasto-plastic concrete model (HC) under blasting effects.
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Conclusion & Impact:Furthermore, the HC model significantly reduced analysis time and model complexity compared to the RC model.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Homojen beton modeli · patlatma analizi · Expilicit Analiz

Abstract

Accurate analysis of structures subjected to blasting is crucial for both the safe construction and controlled demolition of structures. The heterogeneous structure of reinforced concrete structures, consisting of reinforcement and concrete, poses challenges in both the modeling and numerical analysis processes of blasting analyses. This study, conducted in this context, aims to evaluate the behavior of a heterogeneous (separate concrete-reinforcement) classical reinforced concrete model (RC) and a homogenized elasto-plastic concrete model (HC) under blasting effects. Analyses were conducted using two different modeling approaches using ANSYS Workbench software. First, a blast analysis was conducted for a beam-column frame system created by modeling the concrete and reinforcement separately. Second, the analysis was repeated on the same beam-column frame system using the method that assumes the concrete and reinforcement as a single homogeneous material model. Stress values and distributions, strain values, and energy consumption for both models were compared. Furthermore, quantitative and qualitative parameters related to the modeling and analysis processes were evaluated. Due to the limited number of studies in the literature on the use and effectiveness of homogeneous material models in blast analyses, this research aimed to evaluate both model accuracy and analysis efficiency. As a result, a comparison of the stress and strain values of the models revealed a difference of 8-10%. It was determined that they yielded similar results in terms of energy values. Furthermore, the HC model significantly reduced analysis time and model complexity compared to the RC model.

Özet

Patlatma etkisindeki yapıların doğru şekilde analiz edilmesi, hem yapıların güvenli inşa edilmesi hem de kontrollü yıkılması açısından büyük önem taşımaktadır. Betonarme yapıların, donatı ve betondan oluşan heterojen yapısı, patlatma analizlerinin hem modelleme hem de sayısal çözümleme süreçlerinde zorluklar oluşturmaktadır. Bu doğrultuda gerçekleştirilen bu çalışmada, heterojen (ayrık beton-donatı) klasik betonarme modeli (RC) ile homojenleştirilmiş elasto-plastik beton modelinin (HC) patlatma etkileri altındaki davranışlarının değerlendirilmesi amaçlanmaktadır. Bunun için ANSYS Workbench yazılımı kullanılarak iki farklı modelleme yaklaşımı ile analizler gerçekleştirilmiştir. Çalışmada, ilk olarak beton ve donatı ayrı ayrı modellenerek oluşturulan kolon-kiriş çerçeve sistem için patlatma analizi yapılmıştır. İkinci olarak beton ve donatıyı tek bir homojen malzeme modeli olarak kabul eden yöntemle aynı kolon-kiriş çerçeve sistemi üzerinde analiz tekrarlanmıştır. Her iki model için gerilme değerleri ve dağılımları, birim şekil değiştirme değerleri ile bunun için harcanan enerji miktarları karşılaştırılmış. Ayrıca modelleme ve analiz süreçlerine ilişkin nicel ve nitel parametreler değerlendirilmiştir. Literatürde, patlatma analizlerinde homojen malzeme modelinin kullanımı ve etkinliği üzerine sınırlı sayıda çalışma bulunması nedeniyle, bu araştırma hem model doğruluğunu hem de analiz verimliliğini değerlendirmeyi hedeflemiştir. Sonuç olarak, modellerin gerilme ve birim şekil değiştirme değerleri karşılaştırıldığında %8-10 oranında farklılık olduğu görülmüştür. Enerji değerleri açısından yakın sonuçlar verdiği tespit edilmiştir. Ayrıca HC modelin RC modele kıyasla analiz süresi ile model karmaşıklığını anlamlı ölçüde azalttığı izlenmiştir.

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Cite This Article

Armağan, G., Gürbüz, A. (2025). Assessment of a Proposed Elasto-Plastic Homogenized Concrete Model for Reinforced Concrete Structures under Blast Loads. Recep Tayyip Erdoğan Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 6 Sayı: 3, 815–824. https://doi.org/10.53501/rteufemud.1745657

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