Numerical Engineering & Consulting Services
Society of scientific calculation specialized in Civil Engineering
Dynamics
Vibration of a raft foundation in an experimental installation facility
- Studied structure: reinforced concrete raft foundation, reinforced concrete piles and ground layers
- Mechanic behaviour: linear elasticity
- Boundary conditions: semi-finite surrounding soil and foundation (Summerfeld)
- Load: dynamic transient excitation (environment noises recorded in-situ)
Objectives: Determine vibration levels of the raft foundation before construction in order to assist designing works and determine the pertinence of using piles for reinforcing foundation.
- European Synchrotron Research Facilities
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- Methodology principle
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- Spectra comparison, before and after construction (recorded measures and simulations)
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Dynamics
Dynamic behavior of an aged reinforced concrete bridge deck
- Studied structure: A prestressed concrete bridge deck
- Mechanic behaviour: cyclic concrete cracking, damping
- Boundary conditions: simply supported on the piles
- Load: body weight and rolling load of a moving wheel of a high speed train
Objectives: Studying damaged concrete effects on dynamical characteristics of the bridge.
- Moving wheel of a high speed train
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- Deflection, load, and support reaction
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- Vertical acceleration curve
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Dinamic
Vibration of a raft foundation of an experimental set up
- Studied structure: a reinforced concrete raft foundation, reinforced concrete piles and underground layers
- Mechanic behaviour: linear elasticity
- Boundary conditions: semi-infinite surrounding soil and foundation (Summerfeld)
- Load: transient dynamic excitation caused by pedestrians walking on the building floor
Objectives: Determine vibration levels of the raft foundation as a consequence of the dynamic effect induced by people moving inside the building.
- FE 3D mesh of the slab with its piles and the surrounding ground
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- Magnitude of vertical displacements
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- First Eigen mode shapes
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Dynamics
Study of an object impacting on a RC slab
- Studied structure: reinforced concrete slab
- Mechanic behaviour: linear elasticity (for this example)
- Boundary conditions: simply supported
- Load: falling of a 200 kg body at a speed of 3 m/s
Objectives: Determine stresses produced in concrete and reinforcement bars and evaluate the possibility of failure by crack formation or steel yielding.
- Finite Element mesh
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- Pressure map evolution
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- Iso pressure surface history
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Dynamics
Study of an object impacting on a RC slab
- Studied structure: reinforced concrete slab
- Mechanic behaviour: linear elasticity (for this example)
- Boundary conditions: simply supported
- Load: falling of a 200 kg body at a speed of 3 m/s
Objectives: Determine stresses produced in concrete and reinforcement bars and evaluate the possibility of failure by crack formation or steel yielding.
- Finite Element mesh
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- Pressure map evolution
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- Iso pressure surface history
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Examples are originaly from F. GATUINGT's research studies