{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T02:09:33Z","timestamp":1768270173808,"version":"3.49.0"},"reference-count":28,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,14]],"date-time":"2023-05-14T00:00:00Z","timestamp":1684022400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Postgraduate Scientific Research Innovation Project of Xiangtan University","award":["XDCX2019B105"],"award-info":[{"award-number":["XDCX2019B105"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Shock tubes can carry out dynamic mechanical impact tests on civil engineering structures. The current shock tubes mostly use an explosion with aggregate charge to obtain shock waves. Limited effort has been made to study the overpressure field in shock tubes with multi-point initiation. In this paper, the overpressure fields in a shock tube under the conditions of single-point initiation, multi-point simultaneous initiation, and multi-point delayed initiation have been analyzed by combining experiments and numerical simulations. The numerical results match well with the experimental data, which indicates that the computational model and method used can accurately simulate the blast flow field in a shock tube. For the same charge mass, the peak overpressure at the exit of the shock tube with the multi-point simultaneous initiation is smaller than that with single-point initiation. As the shock waves are focused on the wall, the maximum overpressure on the wall of the explosion chamber near the explosion zone is not reduced. The maximum overpressure on the wall of the explosion chamber can be effectively reduced by a six-point delayed initiation. When the interval time is less than 10 ms, the peak overpressure at the nozzle outlet decreases linearly with the interval of the explosion. When the interval time is greater than 10 ms, the overpressure peak remains unchanged.<\/jats:p>","DOI":"10.3390\/s23104743","type":"journal-article","created":{"date-parts":[[2023,5,15]],"date-time":"2023-05-15T08:33:01Z","timestamp":1684139581000},"page":"4743","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Analysis of the Overpressure Fields in a Shock Tube with Multi-Point Initiation"],"prefix":"10.3390","volume":"23","author":[{"given":"Zhuo","family":"Chen","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China"},{"name":"Defense Engineering Institute, Academy of Military Sciences, People\u2019s Liberation Army of China, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huiqi","family":"Ren","sequence":"additional","affiliation":[{"name":"Defense Engineering Institute, Academy of Military Sciences, People\u2019s Liberation Army of China, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiang","family":"Zhao","sequence":"additional","affiliation":[{"name":"Defense Engineering Institute, Academy of Military Sciences, People\u2019s Liberation Army of China, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Songbai","family":"Zhou","sequence":"additional","affiliation":[{"name":"Defense Engineering Institute, Academy of Military Sciences, People\u2019s Liberation Army of China, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhilin","family":"Long","sequence":"additional","affiliation":[{"name":"College of Civil Engineering, Xiangtan University, Xiangtan 411105, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4307-3723","authenticated-orcid":false,"given":"Wei","family":"Liu","sequence":"additional","affiliation":[{"name":"Defense Engineering Institute, Academy of Military Sciences, People\u2019s Liberation Army of China, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Wang, W., Zhang, Z., Huo, Q., Song, X., Yang, J., Wang, X., Wang, J., and Wang, X. (2022). Dynamic Compressive Mechanical Properties of UR50 Ultra-Early-Strength Cement-Based Concrete Material under High Strain Rate on SHPB Test. Materials, 15.","DOI":"10.3390\/ma15176154"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"104902","DOI":"10.1016\/j.cemconcomp.2022.104902","article-title":"Experimental and numerical research on the effect of ogive-nose projectile penetrating UR50 ultra-early-strength concrete","volume":"136","author":"Wang","year":"2023","journal-title":"Cem. Concr. Compos."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1094415","DOI":"10.3389\/feart.2022.1094415","article-title":"Analysis of flow field in a blast simulator combined-driven by explosive charge and compressed gas","volume":"10","author":"Chen","year":"2023","journal-title":"Front. Earth Sci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1007\/s11340-019-00573-5","article-title":"Impulse loading of plates using a diverging shock tube","volume":"60","author":"Isaac","year":"2020","journal-title":"Exp. Mech."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1201","DOI":"10.29252\/jafm.11.05.28240","article-title":"Numerical visualization of blast wave interacting with objects","volume":"11","author":"Dey","year":"2018","journal-title":"J. Appl. Fluid Mech."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1016\/S1003-6326(20)65239-6","article-title":"Forming response of AA5052\u2013H32 sheet deformed using a shock tube","volume":"30","author":"Barik","year":"2020","journal-title":"Trans. Nonferrous Met. Soc. China"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1177\/2041419620911133","article-title":"Approximating a far-field blast environment in an advanced blast simulator for explosion resistance testing","volume":"11","author":"Gan","year":"2020","journal-title":"Int. J. Prot. Struct."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1149","DOI":"10.1007\/s11340-020-00650-0","article-title":"Design and construction of an in-laboratory novel blast wave simulator","volume":"60","author":"Kochavi","year":"2020","journal-title":"Exp. Mech."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1016\/j.dt.2014.04.003","article-title":"Shock tube design for high intensity blast waves for laboratory testing of armor and combat materiel","volume":"10","author":"Courtney","year":"2014","journal-title":"Def. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1007\/s00193-018-0811-7","article-title":"Approximating a free-field blast environment in the test section of an explosively driven conical shock tube","volume":"29","author":"Stewart","year":"2019","journal-title":"Shock Waves"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1181","DOI":"10.1089\/neu.2015.3914","article-title":"High fidelity simulation of primary blast: Direct effects on the head","volume":"33","author":"Sawyer","year":"2016","journal-title":"J. Neurotrauma"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"115902","DOI":"10.1088\/1361-6501\/ac12fc","article-title":"Large cross-section blast chamber: Design and experimental characterization","volume":"32","author":"Kerwin","year":"2021","journal-title":"Meas. Sci. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1307","DOI":"10.1007\/s40799-016-0128-3","article-title":"Parametric study of an explosive-driven shock tube as blast loading tool","volume":"40","author":"Ousji","year":"2016","journal-title":"Exp. Tech."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"771","DOI":"10.1007\/s00193-017-0716-x","article-title":"Numerical investigation of the effects of shock tube geometry on the propagation of an ideal blast wave profile","volume":"27","author":"Li","year":"2017","journal-title":"Shock Waves"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Blanc, L., Schunck, T., and Eckenfels, D. (2021). Sacrificial Cladding with Brittle Materials for Blast Protection. Materials, 14.","DOI":"10.3390\/ma14143980"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1016\/j.ijimpeng.2015.07.013","article-title":"Explosive driven shock tube loading of aluminium plates: Experimental study","volume":"86","author":"Louar","year":"2015","journal-title":"Int. J. Impact Eng."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1002\/mawe.201600578","article-title":"Experimental and numerical study of isotropic circular plates\u2019 response to underwater explosive loading, created by conic shock tube","volume":"48","author":"Heshmati","year":"2017","journal-title":"Mater. Und Werkst."},{"key":"ref_18","unstructured":"Ren, H., Wang, S., Zhou, S., and Wang, W. (2014, January 15\u201318). Development and application of a large blast-wave simulator. Proceedings of the 16th Chinese National Symposium on Shock Waves, Luoyang, China."},{"key":"ref_19","first-page":"169","article-title":"Damage characteristics of a typical cabin with multi-point simultaneous inner explosion","volume":"37","author":"Zhai","year":"2018","journal-title":"J. Vib. Shock."},{"key":"ref_20","first-page":"39","article-title":"Superimposed effect of shock waves of underwater explosion","volume":"41","author":"Lin","year":"2020","journal-title":"Acta ArmamentarII"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"109985","DOI":"10.1016\/j.oceaneng.2021.109985","article-title":"Research on damage effect of underwater multipoint synchronous explosion shock waves on air-backed clamped circular plate","volume":"240","author":"Lin","year":"2021","journal-title":"Ocean. Eng."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1445","DOI":"10.1016\/j.dt.2021.05.020","article-title":"Shock wave and bubble characteristics of underwater array explosion of charges","volume":"18","author":"Hu","year":"2022","journal-title":"Def. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1168","DOI":"10.1016\/j.dt.2020.06.020","article-title":"Numerical investigation of the shockwave overpressure fields of multi-sources FAE explosions","volume":"17","author":"Bai","year":"2021","journal-title":"Def. Technol."},{"key":"ref_24","unstructured":"Heylmun, J., Vonk, P., and Brewer, T. (2020). BlastFoam 2.0 User Guide, Synthetik Applied Technologies, LLC."},{"key":"ref_25","unstructured":"Brewer, T., Heylmun, J., and Vonk, P. (2019). Employment of the Open-Source Airblast Solver BlastFoam to Support the Super Heavy Improvised Explosive Loading Demonstration (SHIELD) Test Program, ISIEMS."},{"key":"ref_26","first-page":"1","article-title":"Numerical study of detonation shock with partitioned fluid-structure interaction simulations","volume":"39","author":"Zhang","year":"2021","journal-title":"Acta Aerodyn. Sin."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2362","DOI":"10.1063\/1.862940","article-title":"Phenomenological model of shock initiation in heterogeneous explosives","volume":"23","author":"Lee","year":"1980","journal-title":"Phys. Fluids"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1366","DOI":"10.1016\/j.compstruc.2009.06.002","article-title":"Craters produced by underground explosions","volume":"87","author":"Luccioni","year":"2009","journal-title":"Comput. Struct."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/10\/4743\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:34:43Z","timestamp":1760124883000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/10\/4743"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,5,14]]},"references-count":28,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2023,5]]}},"alternative-id":["s23104743"],"URL":"https:\/\/doi.org\/10.3390\/s23104743","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,5,14]]}}}