RU1798940C - Radio electronic equipment unit - Google Patents
Radio electronic equipment unitInfo
- Publication number
- RU1798940C RU1798940C SU904777995A SU4777995A RU1798940C RU 1798940 C RU1798940 C RU 1798940C SU 904777995 A SU904777995 A SU 904777995A SU 4777995 A SU4777995 A SU 4777995A RU 1798940 C RU1798940 C RU 1798940C
- Authority
- RU
- Russia
- Prior art keywords
- frame
- vibration
- electronic equipment
- printed circuit
- equipment unit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Description
В свою очередь, слои 9. 10 из механически анизотропного материала передают на соединенные с ним вибропоглощающие. клеевые слои 7,8 неодинаковые деформации сжати и раст жени при одинаковых по модулю, но различных по знаку внешних усили х.In turn, layers 9. 10 of a mechanically anisotropic material are transferred to vibration-absorbing materials connected to it. adhesive layers 7.8 unequal compressive and tensile deformations with identical in modulus but different in sign external forces.
Вибропоглощающий материал .клеевых слоев 7.8 обладает:способностью необратимо , поглощать механическую энергию за счет несовершенной упругости, про вл ющейс в нелинейной и неоднозначной зави- симорти между напр жением и деформацией при нагружении и разгрузке.The vibration-absorbing material of the adhesive layers 7.8 has: the ability to irreversibly absorb mechanical energy due to imperfect elasticity, which manifests itself in a nonlinear and ambiguous relationship between stress and deformation during loading and unloading.
При малых амплитудах колебаний блока (вдали от области резонанса) нелинейные влени невелики. При возрастании амплитуды колебаний (например, со входом блока в область резонанса) механически анизотропный материал приводит к периодическому (с частотой внешнего возмущени ) смешению плоскости нулевых деформаций рамки и тем самым к поочередному смещению деформаций вибропоглощающего клеевого сло в более нелинейную область, в которой рост напр жений существенно отстает от роста деформаций, а все больша энерги колебаний поглощаетс за счет внутреннего трени вибропоглощающего материала.At small oscillation amplitudes of the block (far from the resonance region), nonlinear phenomena are small. With an increase in the oscillation amplitude (for example, with the block entering the resonance region), a mechanically anisotropic material leads to periodic (with the frequency of external perturbation) mixing of the plane of zero deformations of the frame and thereby to a successive shift of the deformations of the vibration-absorbing adhesive layer to a more nonlinear region in which This lag significantly lags behind the growth of deformations, and an ever increasing vibrational energy is absorbed due to the internal friction of the vibration-absorbing material.
Таким образом, использование слоев с механически анизотропными свойствами, и вибропоглощающего клеевого материалаThus, the use of layers with mechanically anisotropic properties, and vibration-absorbing adhesive material
позвол ет получить блок радиоэлектронной аппаратуры, обладающий высокой надежностью при работе в услови х вибрационных нагрузок, а также повысить надежность блока путем повышени прочности его каркаса , за счет использовани слоев из материала , обладающего большими, чем у рамки модул ми упругости на сжатие и раст жение , разнесенных .от нейтральной оси конструкций .allows you to get a block of electronic equipment that has high reliability when working under conditions of vibration loads, as well as to increase the reliability of the block by increasing the strength of its frame, through the use of layers of material with larger compressive and tensile moduli than the frame spaced. from the neutral axis of the structures.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU904777995A RU1798940C (en) | 1990-01-03 | 1990-01-03 | Radio electronic equipment unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU904777995A RU1798940C (en) | 1990-01-03 | 1990-01-03 | Radio electronic equipment unit |
Publications (1)
Publication Number | Publication Date |
---|---|
RU1798940C true RU1798940C (en) | 1993-02-28 |
Family
ID=21489341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU904777995A RU1798940C (en) | 1990-01-03 | 1990-01-03 | Radio electronic equipment unit |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU1798940C (en) |
-
1990
- 1990-01-03 RU SU904777995A patent/RU1798940C/en active
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