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Applied Mechanics Lab
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A lab that turns water, ground, and structures into mechanical models and solves them by computer.
AboutAbout the lab
Modeling of mechanical phenomena and computer simulation.
The Applied Mechanics Lab studies the computational methods themselves used to verify whether civil engineering structures are mechanically safe.
To explain data obtained from field measurements and laboratory experiments in a coherent way, the lab models the mechanical phenomena involved in the simplest form possible.
Based on those models, it develops methods that predict future behavior by computer.
The subjects range widely from water flow to ground, concrete, and tunnels, in a field where a foundation in mathematics and mechanics is essential.
Key terms
- Particle method
- A method that represents water and similar materials as a collection of small particles and calculates flow from the interactions between particles
- Bingham fluid
- A material that does not move like a fluid, behaving like a solid, until a force of a certain magnitude is applied, and begins to flow once that is exceeded
- Tunnel support
- A structure that supports the surrounding rock from the inside so that an excavated tunnel does not collapse
NewsLab news
Book Advanced Particle Methods by the associate professor and others published
The associate professor and others received the Coastal Engineering Journal Citation Award of 2023
A doctoral student and the associate professor and others received the SPHERIC Zhuhai 2024 Best Paper Award
ResearchResearch themes
The lab's foundation is verifying that civil engineering structures are mechanically safe, across the planning, design, construction, and management of social infrastructure. It models mechanical phenomena so that data from field measurements and laboratory experiments can be explained, and develops computational prediction methods based on those models.
*Illustrative imageSolving flows with particle methods
Particle methods can solve problems involving large deformations and complex turbulent flows with stability and high accuracy. The lab is improving numerical schemes to address issues such as conservation of momentum and energy and non-physical pressure fluctuations.
*Illustrative imageCoupled fluid–structure analysis
Problems in which flows and structures influence each other are a challenge across a wide range of engineering fields. In addition to the physical models of computational fluid dynamics and computational structural mechanics, the lab develops coupling methods that are consistent both mathematically and physically.
*Illustrative imageFlow of fresh concrete
Concrete before it hardens is known to be modeled as a Bingham fluid. The lab is developing numerical analysis methods that represent its behavior, aiming to examine safety during construction and labor savings in the work.
*Illustrative imageClarifying the mechanics that supports tunnels
Mountain tunnels are supported by the surrounding ground and by tunnel supports, but the mechanical explanation of this is not yet complete. Focusing on how the earth pressure acting on the supports arises, the lab works to clarify the interaction between the ground and the tunnel structure.
MembersFaculty
The members of the Applied Mechanics Lab are faculty, secretaries, and master's students.
- Associate ProfessorJun Saito
- Associate ProfessorKHAYYER Abbas
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Fluid simulation created using Blender 3D” Original uploader was Charybdis at en.wikibooks / CC BY-SA 3.0 (cropped)
- Solving flows with particle methods: “StandardSPH” Salvatore Marrone / CC BY-SA 4.0 (cropped)
- Coupled fluid–structure analysis: “Fluid-structure-interaction-pressure-field-topology-optimization” Chrlundg / CC BY-SA 4.0 (cropped)
- Flow of fresh concrete: “Concrete Pump, Stetter” KannanVM / CC BY-SA 4.0 (cropped)
- Clarifying the mechanics that supports tunnels: “Completed tunnel lining at intake portal of Diversion Tunnel No. 4, view looking toward entrance. Pressure grouting... - NARA - 293757” 作者不詳 / Public domain (cropped)
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