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Electro-mechanical Hospital
Bed Design
Quadratec, as part of a joint venture, has undertaken the design and development of a
new, electro-mechanically driven, profiling hospital bed, with moving head
rest, leg rest and Trendelenberg mechanisms. The bed was designed to carry a
36 stone patient and offer some of the most advanced features for a bed in
this sector of the market.
Finite Element Analysis of Rail Platform Screen Doors
Quadratec has undertaken numerous Finite Element Analyses
of Platform Screen Door Systems for Underground and Light Rail Vehicle
Systems. These analyses investigated static loading, fatigue loading, impact
loading and seismic loading to assess deflections and stress levels.
Finite Element Analysis of Pharmaceutical Mixer
Quadratec has worked closely with a leading company
producing pharmaceutical process equipment, undertaking static and dynamic
Finite Element Analyses of blenders and their support structures, to ensure
acceptable mechanical integrity for the final product.
Security Lock Design
Quadratec has worked closely with a leading security
company on a number of door locking mechanisms to improve strength, reduce
both size and cost, and add additional features. In addition, all the
necessary prototyping has been undertaken by Quadratec, including rapid
prototyping techniques for the main body castings.
Automotive Head-up Display Design
Design and analysis of a unique ‘Head-up Display’
positioning system. This required very high levels of accuracy and stiffness
to position the display within 0.5 milli-radians and ensure vehicle vibration did
not interfere with the units operation. Two highly geared DC
motors were used for both linear and rotary traverse, with the whole system
being designed to be as lightweight as possible. Finite Element Analysis was
used to ensure acceptable deflections and frequencies.
Dynamic Finite Element Analysis of Missile Defence
Equipment
An analysis was required on a new piece of missile defence
equipment for a UK aerospace defence company. This equipment was to be
subjected to a wide range of shock and random vibration loads during
operation and so a complex finite element analysis was required to model
this. The geometry was modelled using ‘shell’ and ‘beam’ elements. The unit
was mounted on ‘spring’ elements to reproduce the correct mounting
stiffness. Time domain shock loads and frequency domain random vibration
loads were applied in all three axes and displacements and stress levels
calculated to ensure acceptable mechanical integrity.
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