{"id":{"repo_id":"tu-berlin","oai_identifier":"oai:depositonce.tu-berlin.de:11303/24344"},"canonical_url":"https://search.dev.ndltd.org/etd/tu-berlin/oai:depositonce.tu-berlin.de:11303/24344","repository":{"repo_id":"tu-berlin","name":"Technische Universität Berlin","base_url":"https://api-depositonce.tu-berlin.de/server/oai/request"},"display":{"title":"Pre-design estimation of reinforced concrete structures’ nonlinear behavior under the action of intensive loads","abstract":"Modeling the nonlinear response of concrete and reinforced concrete (RC) structures to the effects of high-intensity loads leading to the material's compaction, fragmentation, and cracking is a complex mathematical problem. Its solution is required when designing nonstandard civil structures and facilities at the design stage without access to experimental data. The work develops a methodology for calculating such structures' global and local strengths for applied use with the LS-DYNA solver. We consider the accuracy and reliability of the results obtained and aspects related to their direct application. This work studies the theoretical aspects of the Continuous Surface Cap Model (CSCM) material model. A refined procedure for calibrating the parameters based on the axial compressive strength has been developed. The model's performance was thus verified by comparison with analytical relationships and the results of physical experiments. The range of loading velocities of the structure, from quasi-static to high-speed (including the impact of an air shock wave and penetration by a rigid body at velocities of about 700 m/s), is considered. In addition to the possibility of modeling nonlinear failure mechanics, such applied issues as effective coupling of reinforcing rods with the concrete volume, techniques of modeling of concrete fragmentation and erosion for perforation simulation, the performance of material model with smoothed particle hydrodynamics method (SPH), the selection of the optimal size of finite element (FE) mesh for solving problems of local and global strength, the use of tied contacts to simplify the process of creating models of large building structures are considered. The critical results of this methodology are available in open-access publications in scientific journals and conference proceedings, allowing for reuse when writing scientific reports and project documentation and reducing the time it takes to develop them.","abstract_html":"Modeling the nonlinear response of concrete and reinforced concrete (RC) structures to the effects of high-intensity loads leading to the material's compaction, fragmentation, and cracking is a complex mathematical problem. Its solution is required when designing nonstandard civil structures and facilities at the design stage without access to experimental data. The work develops a methodology for calculating such structures' global and local strengths for applied use with the LS-DYNA solver. We consider the accuracy and reliability of the results obtained and aspects related to their direct application. This work studies the theoretical aspects of the Continuous Surface Cap Model (CSCM) material model. A refined procedure for calibrating the parameters based on the axial compressive strength has been developed. The model's performance was thus verified by comparison with analytical relationships and the results of physical experiments. The range of loading velocities of the structure, from quasi-static to high-speed (including the impact of an air shock wave and penetration by a rigid body at velocities of about 700 m/s), is considered. In addition to the possibility of modeling nonlinear failure mechanics, such applied issues as effective coupling of reinforcing rods with the concrete volume, techniques of modeling of concrete fragmentation and erosion for perforation simulation, the performance of material model with smoothed particle hydrodynamics method (SPH), the selection of the optimal size of finite element (FE) mesh for solving problems of local and global strength, the use of tied contacts to simplify the process of creating models of large building structures are considered. The critical results of this methodology are available in open-access publications in scientific journals and conference proceedings, allowing for reuse when writing scientific reports and project documentation and reducing the time it takes to develop them.","abstract_has_math":false,"creators":["Novozhilov, Yury"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Müller, Wolfgang H."],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025","date_published":"2025","updated_at":"2026-07-27T21:28:29Z","subjects":[],"languages":["en"],"rights":[],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://doi.org/10.14279/depositonce-23158"],"render_values":[{"text":"https://doi.org/10.14279/depositonce-23158","href":"https://doi.org/10.14279/depositonce-23158","code":true}]}]},"links":{"outbound_url":"https://depositonce.tu-berlin.de/handle/11303/24344","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Müller, Wolfgang H."]},{"key":"dc:creator","label":"Author","values":["Novozhilov, Yury"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-10T13:42:13Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-10T13:42:13Z"]},{"key":"dc:date.issued","label":"Date","values":["2025"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://depositonce.tu-berlin.de/handle/11303/24344","https://doi.org/10.14279/depositonce-23158"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Modeling the nonlinear response of concrete and reinforced concrete (RC) structures to the effects of high-intensity loads leading to the material's compaction, fragmentation, and cracking is a complex mathematical problem. Its solution is required when designing nonstandard civil structures and facilities at the design stage without access to experimental data. The work develops a methodology for calculating such structures' global and local strengths for applied use with the LS-DYNA solver. We consider the accuracy and reliability of the results obtained and aspects related to their direct application. This work studies the theoretical aspects of the Continuous Surface Cap Model (CSCM) material model. A refined procedure for calibrating the parameters based on the axial compressive strength has been developed. The model's performance was thus verified by comparison with analytical relationships and the results of physical experiments. The range of loading velocities of the structure, from quasi-static to high-speed (including the impact of an air shock wave and penetration by a rigid body at velocities of about 700 m/s), is considered. In addition to the possibility of modeling nonlinear failure mechanics, such applied issues as effective coupling of reinforcing rods with the concrete volume, techniques of modeling of concrete fragmentation and erosion for perforation simulation, the performance of material model with smoothed particle hydrodynamics method (SPH), the selection of the optimal size of finite element (FE) mesh for solving problems of local and global strength, the use of tied contacts to simplify the process of creating models of large building structures are considered. The critical results of this methodology are available in open-access publications in scientific journals and conference proceedings, allowing for reuse when writing scientific reports and project documentation and reducing the time it takes to develop them.","Die Modellierung der nichtlinearen Reaktion von Beton- und Stahlbetonstrukturen auf die Einwirkungen hochintensiver Lasten, die zur Verdichtung, Fragmentierung und Rissbildung des Materials führen, ist ein komplexes mathematisches Problem. Dessen Lösung ist erforderlich, um bei der Planung von Sonderbauten und Anlagen bereits in der Entwurfsphase ohne Zugang zu experimentellen Daten agieren zu können. Diese Arbeit entwickelt eine Methodik zur Berechnung der globalen und lokalen Festigkeit solcher Strukturen für den praktischen Einsatz mit dem LS-DYNA-Löser. Es werden die Genauigkeit und Zuverlässigkeit der erzielten Ergebnisse sowie Aspekte der direkten Anwendung betrachtet. Die theoretischen Grundlagen des Materialmodells „Continuous Surface Cap Model“ (CSCM) werden untersucht, und ein verfeinertes Verfahren zur Parametrisierung auf Basis der axialen Druckfestigkeit wurde entwickelt. Die Leistungsfähigkeit des Modells wurde durch den Vergleich mit analytischen Beziehungen und den Ergebnissen physikalischer Experimente validiert. Der Bereich der Belastungsgeschwindigkeiten reicht von quasi-statischen bis hin zu Hochgeschwindigkeitsbelastungen (z. B. Einwirkung einer Luftstoßwelle oder Penetration durch einen starren Körper bei Geschwindigkeiten von etwa 700 m/s). Neben der Möglichkeit zur Modellierung der Mechanik des nichtlinearen Versagens werden praktische Fragestellungen wie die effektive Kopplung der Bewehrungsstäbe mit dem Betonvolumen, Techniken zur Modellierung der Fragmentierung und Erosion von Beton bei Perforationssimulationen, die Leistungsfähigkeit des Materialmodells bei Anwendung der Methode der geglätteten Partikelhydrodynamik (SPH), die Auswahl der optimalen Elementgröße für die Berechnung der lokalen und globalen Festigkeit sowie die Verwendung von verklebten Kontakten zur Vereinfachung des Prozesses der Modellerstellung für große Bauwerke behandelt. Die wesentlichen Ergebnisse dieser Methodik sind in Fachzeitschriften und Konferenzbeiträgen veröffentlicht und frei zugänglich, was ihre Wiederverwendung bei der Erstellung wissenschaftlicher Berichte und Projektdokumentationen ermöglicht und die Entwicklungszeit verkürzt."]},{"key":"dc:title","label":"Title","values":["Pre-design estimation of reinforced concrete structures’ nonlinear behavior under the action of intensive loads"]}]}],"canonical_facts":{"dc:contributor.advisor":["Müller, Wolfgang H."],"dc:creator":["Novozhilov, Yury"],"dc:date.accessioned":["2025-04-10T13:42:13Z"],"dc:date.available":["2025-04-10T13:42:13Z"],"dc:date.issued":["2025"],"dc:description.abstract":["Modeling the nonlinear response of concrete and reinforced concrete (RC) structures to the effects of high-intensity loads leading to the material's compaction, fragmentation, and cracking is a complex mathematical problem. Its solution is required when designing nonstandard civil structures and facilities at the design stage without access to experimental data. The work develops a methodology for calculating such structures' global and local strengths for applied use with the LS-DYNA solver. We consider the accuracy and reliability of the results obtained and aspects related to their direct application. This work studies the theoretical aspects of the Continuous Surface Cap Model (CSCM) material model. A refined procedure for calibrating the parameters based on the axial compressive strength has been developed. The model's performance was thus verified by comparison with analytical relationships and the results of physical experiments. The range of loading velocities of the structure, from quasi-static to high-speed (including the impact of an air shock wave and penetration by a rigid body at velocities of about 700 m/s), is considered. In addition to the possibility of modeling nonlinear failure mechanics, such applied issues as effective coupling of reinforcing rods with the concrete volume, techniques of modeling of concrete fragmentation and erosion for perforation simulation, the performance of material model with smoothed particle hydrodynamics method (SPH), the selection of the optimal size of finite element (FE) mesh for solving problems of local and global strength, the use of tied contacts to simplify the process of creating models of large building structures are considered. The critical results of this methodology are available in open-access publications in scientific journals and conference proceedings, allowing for reuse when writing scientific reports and project documentation and reducing the time it takes to develop them.","Die Modellierung der nichtlinearen Reaktion von Beton- und Stahlbetonstrukturen auf die Einwirkungen hochintensiver Lasten, die zur Verdichtung, Fragmentierung und Rissbildung des Materials führen, ist ein komplexes mathematisches Problem. Dessen Lösung ist erforderlich, um bei der Planung von Sonderbauten und Anlagen bereits in der Entwurfsphase ohne Zugang zu experimentellen Daten agieren zu können. Diese Arbeit entwickelt eine Methodik zur Berechnung der globalen und lokalen Festigkeit solcher Strukturen für den praktischen Einsatz mit dem LS-DYNA-Löser. Es werden die Genauigkeit und Zuverlässigkeit der erzielten Ergebnisse sowie Aspekte der direkten Anwendung betrachtet. Die theoretischen Grundlagen des Materialmodells „Continuous Surface Cap Model“ (CSCM) werden untersucht, und ein verfeinertes Verfahren zur Parametrisierung auf Basis der axialen Druckfestigkeit wurde entwickelt. Die Leistungsfähigkeit des Modells wurde durch den Vergleich mit analytischen Beziehungen und den Ergebnissen physikalischer Experimente validiert. Der Bereich der Belastungsgeschwindigkeiten reicht von quasi-statischen bis hin zu Hochgeschwindigkeitsbelastungen (z. B. Einwirkung einer Luftstoßwelle oder Penetration durch einen starren Körper bei Geschwindigkeiten von etwa 700 m/s). Neben der Möglichkeit zur Modellierung der Mechanik des nichtlinearen Versagens werden praktische Fragestellungen wie die effektive Kopplung der Bewehrungsstäbe mit dem Betonvolumen, Techniken zur Modellierung der Fragmentierung und Erosion von Beton bei Perforationssimulationen, die Leistungsfähigkeit des Materialmodells bei Anwendung der Methode der geglätteten Partikelhydrodynamik (SPH), die Auswahl der optimalen Elementgröße für die Berechnung der lokalen und globalen Festigkeit sowie die Verwendung von verklebten Kontakten zur Vereinfachung des Prozesses der Modellerstellung für große Bauwerke behandelt. Die wesentlichen Ergebnisse dieser Methodik sind in Fachzeitschriften und Konferenzbeiträgen veröffentlicht und frei zugänglich, was ihre Wiederverwendung bei der Erstellung wissenschaftlicher Berichte und Projektdokumentationen ermöglicht und die Entwicklungszeit verkürzt."],"dc:identifier.uri":["https://depositonce.tu-berlin.de/handle/11303/24344","https://doi.org/10.14279/depositonce-23158"],"dc:language.iso":["en"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Pre-design estimation of reinforced concrete structures’ nonlinear behavior under the action of intensive loads"],"dc:type":["Doctoral Thesis"]},"updated_at":"2026-07-27T21:28:29Z"}