نتایج جستجو برای: shear strength.

تعداد نتایج: 267888  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تفرش - دانشکده مهندسی عمران 1386

چکیده ندارد.

Journal: :تحقیقات مهندسی کشاورزی 0
هادی واله قوژدی دانشجوی سابق کارشناسی ارشد پردیس ابوریحان دانشگاه تهران سیدرضا حسن بیگی بیدگلی استادیار گروه فنی کشاورزی پردیس ابوریحان دانشگاه تهران محمدحسین سعیدی راد استادیار بخش تحقیقات فنی و مهندسی کشاورزی و منابع طبیعی استان خراسان رضوی محمدحسین کیانمهر دانشیار گروه فنی کشاورزی پردیس ابوریحان دانشگاه تهران

the shear strength and shear energy per unit area, as well as the force and energy required for picking flowers, are important parameters in the design and development of harvesting mechanisms. in this study, shear strength and shear energy per unit area of saffron (crocus sativus l.) stems were determined at different bevel angles and shear velocities. the force and energy required for picking...

2017
Liqun Hou Weiming Yan Shicai Chen Ruiyun Zhang Yue Qi

Due to the scarcity of rational models for predicting the strength of RC beam-column sandwich joints, a modified simplified softened strut-and-tie model suggests a more rational calculation method for the effective compressive strength and the height of the joint concrete based on the simplified softened strut-and-tie. The shear strength of existing tested 15 sandwich interior joints is calcula...

Journal: :dental research journal 0
claudio poggio riccardo beltrami andrea scribante marco colombo marco chiesa

background: the aim of this study was to compare the shear bond strength of four one-step self-etch adhesives with different ph values to enamel and dentin. materials and methods: in this in vitro study, 200 bovine permanent mandibular incisors were used. four one-step self-etch adhesives with different ph values were tested both on enamel and on dentin: adper™ easy bond self-etch adhesive (ph ...

Journal: :علوم 0

the mechanical behaviour of rockfill materials and aggregates depends not only on particle size and compaction, but also on their strength and lithological properties. in this research two types of large triaxial and direct shear tests are performed on rockfill materials. this paper compares the stress-strain behaviour of sandstone and andesibasalt materials in triaxial compression tests (3006...

Journal: :international journal of civil engineering 0
m. hassanlourad iran-zanjan-etemadieh h. salehzadeh iran-tehran-narmak h. shahnazari iran-tehran-narmak

the effects of cementation and the physical properties of grains on the shear behavior of grouted sands are investigated in this paper. the consolidated-undrained triaxial shear behavior of three grouted carbonate sands with different physical properties, including particle size distribution, particle shape and void ratio, was studied. two sands were obtained from the north shores of the persia...

Journal: :international journal of civil engineering 0
s.a. naeini r. ziaie-moayed

series of undrained monotonic triaxial tests and cone penetration tests were conducted on loose silty sand samples to study correlation between undrained shear strength of silty sands (sus) and piezocone test results. cpt tests were conducted at 27 silty sand samples in calibration chamber. the results indicate that, in low percent of silt (0-30%), as the silt content increases, the undrained s...

The addition of steel fibers into concrete improves the postcracking tensile strength of hardened concrete and hence significantly enhances the shear strength of reinforced concrete reinforced concrete beams. However, developing an accurate model for predicting the shear strength of steel fiber reinforced concrete (SFRC) beams is a challenging task as there are several parameters such as the co...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید