Příští přednáška
úterý 10. dubna 2018 od 13:00, konferenční sál B
Behaviour of brittle materials under dynamic loading.
Jaroslav Buchar and Jan Trnka
Institute of Thermomechanics of the CAS, v. v. i.
Osnova přednášky:
The lecture deals with some achievement on description of brittle materials behavior at highstrain-rate loadings such as: air blast loading or percussive drilling of rocks, ballistic impact against ceramic armour or transparent windshields, plastic explosives used to damage or destroy concrete structures, soft or hard impacts against concrete structures and many others in civil and military applications.
The most popular dynamic testing techniques used for this which are based on the use of split Hopkinson pressure bar methodologies and/or plate impact testing methods are briefly described. The influence of the strain rate on the material strength is discussed. Some constitutive equations are presented. Some of them are used in the numerical simulation of some ballistic loading of ceramics.
