BEAR has the finite element (FE) capability to analyze large, complex, multi-body impact and dynamic problems in three dimensions (3D). Analysis results are available in the form of photo-quality prints or computer video files. These are viewable on all personal computers. They may also be projected in courtroom settings using a standard digitalprojector. BEAR’s FE and 3D analysis eliminates the need for additional animation. Our services include generating images and digital video, which we provide at no additional cost.
As an example of our services in this area of specialization, BEAR performed a detailed contact analysis of the sleeve assembly of the rocker arm of a helicopter engine. Ourfinite element analysis demonstrated the sleeve generated high stresses at the point of contact due to both bolting and system loads.
Buried Pipe
Another recent analysis involved a pipe buried within a plastic pipe. The buried pipe was subject to the repeated dynamic loads of a water hammer. Our 3D model revealed how spacers between the pipes concentrated stresses in the outer pipe near areas of connection. [is thar what you mean?]Our model also examined the soil surrounding the pipe and its effective stiffness as part of or analysismodel.
Structural Analysis
BEAR performs all levels of structural integrity assessment – even those with short noticeand requiring rapid results. The finite element analysis model at left analyzes the transition section of a 300-foot tower,, 12 feet in diameter,.Our analysis included an examination of heat treatment of the welds combined with wind loading. BEAR also performs on-site strain gage and thermal couple testing to more accurately assess load conditions, as well as determine material fracture and fatigue properties in our full service laboratory.
Our clients include Chevron, TOSCO, BP, ARCO, Golden Gate Bridge District, A/C Transit and many other prominent commercial and non-profit entities at home in the United States and abroad.
Offshore Platforms
BEAR engineers regularly perform fracture assessments for offshore platforms. These include locations in U.S. waters, the North Sea,the Carribean and Gulf of Mexico, including those vulnerable to negative impact of hurricane activity. Our team, for example, inspected, laser-scanned and analyzed the Unimar platform below after Hurricane Katrina tossed it about in 2005.
Amusement Parks
BEAR has experience performing fatigue and fracture analyses on a wide variety of large structures including the Concord California water slide space frame. A finite element computer analysis model of the water slide is shown to the left.
Playgrounds
A recent NIH study showed 10 percent of accidents on playgrounds are due to fighting among its occupants. A much larger percentage of accidents in playgrounds, result when swings, slides, climbing frames, metal bars,merry-go-rounds and other equipment fail for unforseen reasons. Rope-plank-type swings are frequently involved in backward falling accidents. Slides contribute to fall accidents. Playground accidents frequently lead to fractures of the extremities or concussion of the brain.To help prevent these accidents and determine the causes of failure, the BEAR engineering team has analyzed numerous playgrounds using various methodologies.
BEAR has the finite element (FE) capability to analyze large, complex, multi-body impact and dynamic problems in three dimensions (3D). Analysis results are available in the form of photo-quality prints or computer video files. These are viewable on all personal computers. They may also be projected in courtroom settings using a standard digitalprojector. BEAR’s FE and 3D analysis eliminates the need for additional animation. Our services include generating images and digital video, which we provide at no additional cost.
As an example of our services in this area of specialization, BEAR performed a detailed contact analysis of the sleeve assembly of the rocker arm of a helicopter engine. Ourfinite element analysis demonstrated the sleeve generated high stresses at the point of contact due to both bolting and system loads.
Buried Pipe
Another recent analysis involved a pipe buried within a plastic pipe. The buried pipe was subject to the repeated dynamic loads of a water hammer. Our 3D model revealed how spacers between the pipes concentrated stresses in the outer pipe near areas of connection. [is thar what you mean?]Our model also examined the soil surrounding the pipe and its effective stiffness as part of or analysismodel.
Structural Analysis
BEAR performs all levels of structural integrity assessment – even those with short noticeand requiring rapid results. The finite element analysis model at left analyzes the transition section of a 300-foot tower,, 12 feet in diameter,.Our analysis included an examination of heat treatment of the welds combined with wind loading. BEAR also performs on-site strain gage and thermal couple testing to more accurately assess load conditions, as well as determine material fracture and fatigue properties in our full service laboratory.
Our clients include Chevron, TOSCO, BP, ARCO, Golden Gate Bridge District, A/C Transit and many other prominent commercial and non-profit entities at home in the United States and abroad.
Offshore Platforms
BEAR engineers regularly perform fracture assessments for offshore platforms. These include locations in U.S. waters, the North Sea,the Carribean and Gulf of Mexico, including those vulnerable to negative impact of hurricane activity. Our team, for example, inspected, laser-scanned and analyzed the Unimar platform below after Hurricane Katrina tossed it about in 2005.
Amusement Parks
BEAR has experience performing fatigue and fracture analyses on a wide variety of large structures including the Concord California water slide space frame. A finite element computer analysis model of the water slide is shown to the left.
Playgrounds
A recent NIH study showed 10 percent of accidents on playgrounds are due to fighting among its occupants. A much larger percentage of accidents in playgrounds, result when swings, slides, climbing frames, metal bars,merry-go-rounds and other equipment fail for unforseen reasons. Rope-plank-type swings are frequently involved in backward falling accidents. Slides contribute to fall accidents. Playground accidents frequently lead to fractures of the extremities or concussion of the brain.To help prevent these accidents and determine the causes of failure, the BEAR engineering team has analyzed numerous playgrounds using various methodologies.
Aircraft Engine Components
The connecting rod shown here was analyzed for stress concentrations in the connecting rod and bolts used to hold it together. BEAR performed a parametric study of bolt pre-loads using finite element analysis to determine the necessary bolt pre-load. Our goal was to reduce stress below a critical level. Our subsequent results were used to determine the cause of failure and new pre-load specifications to prevent future failures.
