4 research outputs found
When can we avoid paradoxes in the contact problems of two thermoelastic cylindres
No full textWe discuss the problem of a contact of two parallel elastic cylinders heated to different temperatures. The purpose of our investigation is to derive the conditions which have to be satisfied so that the solution to the thermoelastic problem is physically meaningfull (i.e. the paradox of "the cooled cylinder" can be avoided). Pertinent formulae have been derived for relations between the contact pressure, geometrical characteristics of the solids and distributions of heat flux over the contacting region. The paper has been ilustrated by an example diagrams.Kiedy mo偶na unikn膮膰 paradoks贸w w zagadnieniu termospr臋偶ystego kontaktu dw贸ch walc贸w Rozpatrujemy zagadnienie kontaktu 艣ciskanych spr臋偶ystych walc贸w o r贸wnoleg艂ych tworz膮cych w polu temperatury. G艂贸wnym celem pracy jest wyprowadzenie odpowiednich warunk贸w gwarantuj膮cych fizyczny sens rozwi膮za艅 odpowiednich zagadnie艅 termospr臋偶ysto艣ci (tzn. unikni臋cie paradoksu "ch艂odnego walca"). W tym celu wyprowadzone zota艂y wzory na zwi膮zki 艂膮cz膮ce ci艣nienie na powierzchni kontaktu, geometryczne charakterystyki cylindr贸w i rozk艂ad strumienia ciep艂a poprzez powierzchni臋 kontaktu. Prac臋 zilustrowano przyk艂adem liczbowym i wynikaj膮cymi st膮d wykresami
On axisymmetric heat conduction problem for multilayer graded coated half-space
No full textThe technique of integral Hankel transform to find the solution of heat conduction in half-space coated by a multilayered package of homogenous laminae is applied. The half-space is heated by the given heat flux on the boundary surface. The temperature and heat flux distribution in the radial direction is analyzed for two types of coatings: 1) when the heat conductivity coefficient is described by a power or exponential function of the distance to the boundary surface; 2) multilayered coating has a periodic structure
On axisymmetric heat conduction problem for multilayer graded coated half-space
No full textThe technique of integral Hankel transform to find the solution of heat conduction in half-space coated by a multilayered package of homogenous laminae is applied. The half-space is heated by the given heat flux on the boundary surface. The temperature and heat flux distribution in the radial direction is analyzed for two types of coatings: 1) when the heat conductivity coefficient is described by a power or exponential function of the distance to the boundary surface; 2) multilayered coating has a periodic structure
