AEROSPACE & MARINE
Peridynamics
The peridynamic theory provides the capability for improved modeling of progressive failure in materials and structures. Further, it paves the way for addressing multi-physics and multi scale problems. Even though numerous journal articles and conference papers exist in the literature on the evolution and application of the peridynamic theory, it is still new to the technical community. Please see below for numerous application areas of peridynamics performed by PDRC researchers.
STRUCTURAL RELIABILITY
Structural inspection is a critical part of the ship structural integrity assessment. Corrosion, as a very pervasive type of structural degradation, can potentially lead to catastrophic failure or unanticipated out of service time. In order to mitigate the unfavourable consequences of age-related structural failure, a wisely planned inspection is needed. The current practice of calendar-based inspection of ship structures may cause either an unexpected stoppage during normal routine due to unpredicted structural failures or yield higher costs for unnecessary inspections. Therefore, a strategy to determine timely and effective inspection plans is highly desirable. This is why there is recently a growing interest in the reliability-based inspection planning of ship structures. Reliability procedures are believed to have substantial potential to provide the ship owners and operators with a tool for rationalizing the determination of the inspection interval in order to maximize the efficiency of inspections and minimize cost of inspection by avoiding unnecessary gauging surveys.
Parallel mid-body of the Panamax containership
ships&offshore structures
Ships and offshore structures are complex structures. Due to harsh marine environment, these structures may suffer from fatigue and corrosion damages.
subsea structures
Subsea structures are essential part of ocean structures including pipelines, cables and risers which are especially important for oil&gas field.
SHIP COLLISIONS & GROUNDING
Accidents can happen at any time due to human error, technical problems or harsh environmental conditions. For the ships, accidents may occur in several forms such as collision of two ships, collision of ship with a flexible offshore structure or grounding phenomenon. All of these may result in undesirable and catastrophic consequences including human life loses, environmental problems due to oil spill, etc. Hence, it is important to take into account the possibility of any form of accidents during the design process in order to reduce the unexpected outcome of these accidents.