Special Notice: ENERGY, DEPARTMENT OF is seeking Open Source Software: BlackBear: Advanced Simulation for Structural Integrity. This software is used in civil engineering to predict the behavior of materials in structures over time. BlackBear offers a comprehensive solution by simulating degradation phenomena and structural response under various loading conditions. It models the behavior of materials such as concrete and steel, providing a comprehensive view of structural response to thermal, mechanical, wind, and earthquake loadings. The software is applicable to optimizing the design and maintenance of buildings, bridges, and dams, conducting safety assessments, advancing material science, and managing nuclear power plants. Download now to transform your civil structure analysis and design approach.