Hypervalent iodine compounds have enjoyed a very rich chemistry in recent years. Many novel react... more Hypervalent iodine compounds have enjoyed a very rich chemistry in recent years. Many novel reactions have been developed, and new reagents as well as strategies have expanded the repertoire of the synthetic chemist. [1] Hypervalent bromine compounds, however, have not been considered seriously although they have been known for a long time. Already in 1952 the formation of the diazonium salt from amine 1 and subsequent thermal decomposition yielding the l 3-bromane derivative 2 was described (Scheme 1). [2]
Finite element computational model was developed to simulate impact behaviour and predict the fai... more Finite element computational model was developed to simulate impact behaviour and predict the failure response of carbon fibrous composite panels subjected to low velocity drop-weight impact on the partitioned area where an impactor of flat-nosed tip hits the target. Critical damage regions under impactors' tips are very complicated phenomenon to study since internal load re-distributes after impact and damage accumulates in through-the-thickness plies. Transformation of mathematical formulations into numerical model and writing modular code also need extensive efforts and time. However, efficient way of solving the problems using commercial software generated simulations. For this work, commercially available software ABAQUS TM was selected, which incorporates shell elements and stacks of plies. The user Table option of the software provides an extended amount of input data without having to re-link the code that could be utilised for various load cases. Model developing and s...
Uploads
Papers by Umar Farooq