This paper investigates the non-linear free and forced vibration response of immovable simply-supported composite rectangular plates. The plates are symmetric and are subjected to a transverse pressure which is harmonic in time. A novel procedure is implemented to obtain the non-linear ordinary differential equation by using first order shear deformation theory and Galerkin method. The multiple time scales perturbation method is utilised to obtain an analytical closed-form expression for the non-linear frequency and frequency response equation of the studied plates. After validation of present study with available literature, the non-linear free and forced vibrations of a fibre-metal laminated plate, named Glare 3, have been investigated. Also, the effects of some system parameters on the non-linear frequency have been studied.
- Inderscience Publishers
- Non-linear vibration response of laminated fibre-reinforced ...
Tower rescue: first-in operations and the IAP
Across the country “tower” type rescues are becoming more and more common. Accordingly, there is a growing need for local rescuers to be aware of these sites in their response areas, pre-plan for different rescue scenarios, and train their specialized rescue personnel to the appropriate level in order to facilitate the rescue in a safe manner. Tower rescues have become so prevalent, that when the NFPA publishedthe latest version of the 1670 standard, it included Tower Rescue Awareness, Operations, and...
Chemical Spill Response Products & Procedures
The current political and world climate has forced the Emergency Response Community to take a closer look at the number of potential hazards that they may be called upon to deal with. Of particular concerns are the response to terrorist and/or chemical incidents. Depending on the type of event, responders may be faced with a myriad of challenges and onsite dangers. With a chemical release, the situation will be immediately apparent, as numerous individuals become incapacitated in a very short period of time....
Geli Enables BMW EV Demand Response Program - Case Study
Challenge BMW Technology Group planned to launch a ground-breaking electric vehicle (EV) program called i ChargeForward that would allow individual BMW i3 owners to earn money by participating in demand response (DR) events. However, in order for BMW to participate in Pacific Gas & Electric’s day-ahead and real-time DR markets, it needed to guarantee 100 kilowatts (kW) of demand reduction. BMW could not guarantee that the fleet of vehicles in the field would always be plugging in and charging, so the...
First short-term noise monitoring system for airports launched
Airport Noise Monitoring On Demand increases flexibility for investigation, compliance or planned changes Brüel & Kjær today announced the release of Airport Noise Monitoring On Demand, a system that enables airports to temporarily - and cost-effectively - increase noise monitoring when needs arise. This system helps airports measure before and after operational changes, investigate complaints, show compliance and credibly communicate with the community. Airport Noise Monitoring On Demand works...
What should be in your First Aid Kit?
Basic Essentials for a Low-Hazard Workplace For most it will be obvious that their workplace needs a first aid kit somewhere on site, but when it comes to the exact contents, things become less straightforward. What should they contain? What’s the bare minimum of items they should be stocked with? The simple answer is that there is no standardised list of contents, only common basic recommendations. Determining what needs to be stocked in your kit should be decided as part of your wider health &...